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I had an installation of 4.7.1; after installing pyDev and updating to 4.7.2 eclipse.exe was gone, but eclipsec.exe still there. The installtion I had was eclipse.buildId=4.7.1.M20170906-1700 I then installed PyDev. Eclipse asked to restart, which I denied. I then press general update, which updated to 4.7.2 When done Eclipse asked to restarted, which I allowed. Eclipse did not restart, and upon inspection eclipse.exe was gone, but I could run eclipsec.exe. Somewhere in the above steps I was asked to approve some certificate, that I assumed was default to allow, but wasnt. Nothing happened after that, so I repeated that part, which then continued the installation/update. PyDev is installed. That part of .log: !ENTRY org.eclipse.equinox.p2.transport.ecf 2 0 2018-01-25 22:16:50.962 !MESSAGE Connection to http://download.eclipse.org/eclipse/updates/4.7/R-4.7.1a-201710090410/plugins/org.apache.lucene.core_6.1.0.v20170814-1820.jar.pack.gz failed on sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Retry attempt 0 started !STACK 0 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) at sun.security.ssl.AppOutputStream.write(Unknown Source) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:157) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:164) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:270) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:275) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:207) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:241) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) ... 24 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 30 more !ENTRY org.eclipse.equinox.p2.transport.ecf 2 0 2018-01-25 22:16:51.082 !MESSAGE Connection to https://mirrors.dotsrc.org/eclipse//eclipse/updates/4.7/R-4.7.1a-201710090410/plugins/org.eclipse.jdt.core.manipulation_1.9.50.v20170920-1015.jar.pack.gz failed on sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Retry attempt 0 started !STACK 0 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) at sun.security.ssl.AppOutputStream.write(Unknown Source) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:157) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:164) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:270) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:275) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:207) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:241) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) ... 24 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 30 more !ENTRY org.eclipse.equinox.p2.transport.ecf 2 0 2018-01-25 22:16:52.172 !MESSAGE Connection to http://download.eclipse.org/eclipse/updates/4.7/R-4.7.1a-201710090410/plugins/org.apache.lucene.core_6.1.0.v20170814-1820.jar.pack.gz failed on sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Retry attempt 0 started !STACK 0 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) at sun.security.ssl.AppOutputStream.write(Unknown Source) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:157) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:164) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:270) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:275) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:207) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:241) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) ... 24 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 30 more !ENTRY org.eclipse.equinox.p2.transport.ecf 2 0 2018-01-25 22:16:53.963 !MESSAGE Connection to http://download.eclipse.org/eclipse/updates/4.7/R-4.7.1a-201710090410/plugins/org.apache.lucene.core_6.1.0.v20170814-1820.jar.pack.gz failed on sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Retry attempt 0 started !STACK 0 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) at sun.security.ssl.AppOutputStream.write(Unknown Source) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:157) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:164) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:270) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:275) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:207) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:241) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) ... 24 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 30 more !ENTRY org.eclipse.equinox.p2.transport.ecf 2 0 2018-01-25 22:17:13.964 !MESSAGE Connection to https://mirrors.dotsrc.org/eclipse//releases/oxygen/201712201001/plugins/org.eclipse.egit.mylyn.ui_4.9.2.201712150930-r.jar.pack.gz failed on sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Retry attempt 0 started !STACK 0 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) at sun.security.ssl.AppOutputStream.write(Unknown Source) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:157) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:164) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:270) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:275) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:207) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:241) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) ... 24 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 30 more !ENTRY org.eclipse.equinox.p2.transport.ecf 2 0 2018-01-25 22:17:17.036 !MESSAGE Connection to http://download.eclipse.org/releases/oxygen/201712201001/plugins/org.eclipse.epp.mpc.help.ui_1.6.3.v20171122-1939.jar failed on sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Retry attempt 0 started !STACK 0 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) at sun.security.ssl.AppOutputStream.write(Unknown Source) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:157) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:164) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:270) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:275) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:207) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:241) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) ... 24 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 30 more !ENTRY org.eclipse.equinox.p2.transport.ecf 2 0 2018-01-25 22:17:17.916 !MESSAGE Connection to http://download.eclipse.org/releases/oxygen/201712201001/plugins/org.eclipse.epp.mpc.ui_1.6.3.v20171122-2010.jar failed on sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Retry attempt 0 started !STACK 0 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) at sun.security.ssl.AppOutputStream.write(Unknown Source) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:157) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:164) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:270) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:275) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:207) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:241) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) ... 24 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 30 more !ENTRY org.eclipse.equinox.p2.transport.ecf 2 0 2018-01-25 22:17:25.805 !MESSAGE Connection to http://download.eclipse.org/releases/oxygen/201712201001/plugins/org.eclipse.m2e.maven.runtime_1.8.2.20171007-0216.jar failed on sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Retry attempt 0 started !STACK 0 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source) at sun.security.ssl.AppOutputStream.write(Unknown Source) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:157) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:164) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:270) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:275) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:207) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:241) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) ... 24 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) ... 30 more !ENTRY org.eclipse.equinox.p2.touchpoint.natives 2 0 2018-01-25 22:17:43.431 !MESSAGE Could not remove temporary backup directory (it is safe to manually delete it and its contents): D:\Users\pebl\AppData\Local\Temp\epp.package.java_2c25e5de7ec0_c0a801743ab2 !SESSION 2018-01-25 22:20:55.772 ----------------------------------------------- eclipse.buildId=4.7.2.M20171130-0510 java.version=1.8.0_31 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US Framework arguments: -product org.eclipse.epp.package.java.product Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.java.product
*** Bug 548299 has been marked as a duplicate of this bug. ***
I'm not sure where this is done in p2, but I suspect p2 is trying to do a rename of the file to a new location and that is failing for some reason. This should be checked and as a last resort it should copy instead of move the exe to the final location and log a warning that some garbage is being left behind.
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. As such, we're closing this bug. If you have further information on the current state of the bug, please add it and reopen this bug. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie.