My Eclipse (2020-03 - Running on Windows 10) was working perfectly. Then suddenly my company updated policies and absolutelly nothing more worked. I keep getting:
Unable to read repository at https://download.eclipse.org/technology/epp/packages/2023-03/202303091200/content.xml.
javax.net.ssl.SSLHandshakeException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.ssl.Alert.createSSLException(Unknown Source)
NOTHING works anymore. Build, Compile, even the MarketPlace returns this error. I tried a LOT of solutions in SO like this one, but none worked. Added the certificate manually, updated policy, disabled company firewall (with the own company support).
When compiling, I even manually download each maven dependency and pom to the right place, so I could "bypass" the dep download, but didn´t work.
I manage to resolve it with the bellow answer. I am leaving it here to help someone in need like me in the future. (I spent 3 days trying to solve this issue).
The thing that did the trick for me, is describet in this thread.
Basically:
use the windows trust store by providing by adding the following option in eclipse.ini:
-Djavax.net.ssl.trustStoreType=Windows-ROOT
It ensures that eclipse uses all Windows Trusted SSL Certificates, and in my case, the issue is gone.
Hope it helps someone.
Thanks.