Closed
Description
On starting Library Manager and Board Manager, I immediately get the attached Error Log.
Error downloading https://downloads.arduino.cc/libraries/library_index.json
java.lang.RuntimeException: java.lang.Exception: Error downloading https://downloads.arduino.cc/libraries/library_index.json
at cc.arduino.contributions.libraries.ui.LibraryManagerUI.lambda$onUpdatePressed$2(LibraryManagerUI.java:206)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.Exception: Error downloading https://downloads.arduino.cc/libraries/library_index.json
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:139)
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:120)
at cc.arduino.contributions.JsonDownloader.download(JsonDownloader.java:49)
at cc.arduino.contributions.GZippedJsonDownloader.download(GZippedJsonDownloader.java:63)
at cc.arduino.contributions.libraries.LibraryInstaller.updateIndex(LibraryInstaller.java:67)
at cc.arduino.contributions.libraries.ui.LibraryManagerUI.lambda$onUpdatePressed$2(LibraryManagerUI.java:202)
... 1 more
Caused by: 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(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1946)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:316)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:310)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1639)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:223)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1037)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:965)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1064)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1367)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1395)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1379)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:162)
at cc.arduino.utils.network.FileDownloader.downloadFile(FileDownloader.java:181)
at cc.arduino.utils.network.FileDownloader.download(FileDownloader.java:132)
at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:137)
... 6 more
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(PKIXValidator.java:397)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:302)
at sun.security.validator.Validator.validate(Validator.java:262)
at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1621)
... 19 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392)
... 25 more
No libraries or boards are listed except the installed defaults.
I have tried all of the following links in Preferences/Additional Board URLs:
- http://arduino.esp8266.com/stable/package_esp8266com_index.json
- http://downloads.arduino.cc/packages/package_index.json
- https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
I have also:
- Deleted files and eventually the whole Arduino15 folder.
- Manually downloaded "package_esp8266com_index.json" and placed it in the Arduino15 folder.
- Tried on both ethernet and wifi.
- Inserted a firewall rule for Arduino.exe.
- IP v6 totally disabled in network configurations.
- Run "setx _JAVA_OPTIONS -Djava.net.preferIPv4Stack=true"
- Totally removed the IDE, deleted all associated files and folders, cleaned registry, searched for key phrases across my entire computer to ensure all files removed. Then reinstalled. Set the Pref-Manager URL and network proxy disabled. Still cannot load any library or board.
- Run IDE at various times in protected mode.
- Installed the Hourly Build.
Note: I have a variety of environments (VS, Eclipse, JetBrains etc for various projects includig some Java development.
Now at a loss for where to go next, especially since it works OK on my old laptop and not my main machine. Both are Windows 7 and similar install configurations. Any and all help appreciated.