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Hope this helps !
Please apply the following hotfix to resolve the issue
Issue resolved with hotfixes:
For Tridion Sites 9.0, apply CM_18.104.22.16892 and CME_22.214.171.12400.
For Tridion Sites 9.1, apply CM_126.96.36.19992 and CME_188.8.131.5200.
after investigating we found that the Java_Home was set to JRE and the path was set to JDK bin . We created a new system variable JDK_HOME and we tried the issue is fixed . Since we had set the JDK bin on the path the service was trying to look for the cert under JDK cacerts
AFAIK - This error most likely still your certificate is not correctly exported and imported to configured your SSL Keystore file in microservice.
Try this below PowerShell script to export the CA certificate and generate the Keystore file using the key tool.
$certficateFilePath = "D:...