While trying to update the System Workbench in my Eclipse 4.9.0 I experience the following error message:
Unable to read repository at http://ac6-tools.com/Eclipse-updates/org.openstm32.system-workbench.update-site-v2/compositeContent.xml.
sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
The location the update should be downloaded from is http://ac6-tools.com/Eclipse-updates/org.openstm32.system-workbench.update-site-v2 (which is the URL recommended by the documentation).
I suspect the error message being the result of the certificate used for the URL above. This certificate is new (valid since September 18. 2019, two days ago). The CN of this certificate is www.ac6.fr and not www.ac6-tools.com. The domain www.ac6-tools.com which is used for the software update is “only” part of the certificates alternative names. Might this be the problem?
Fact is, I never experienced any problem installing or updating the software before.