Accessing Webclient of vCenter Server fails with error "A server error occurred. No error message is available."

Products

• VMware vCenter Server

Issue/Introduction

• Accessing vCenter Server webclient fails with error:
  A server error occurred. No error message is available.
  
  
• In the /var/log/vmware-identity-sts.log, there are entries similar to:
  INFO sts[60:tomcat-http--14] [CorId=7a6454d4-fbbe-47ca-be93-6bf0252348a3] [com.vmware.identity.sts.InvalidCredentialsException] Censored exception
com.vmware.identity.sts.InvalidCredentialsException: Solution user's certificate does not match the one in BST!
        at com.vmware.identity.sts.auth.impl.BSTAuthenticator.checkMatchingCertificate(BSTAuthenticator.java:228) ~[libsts.jar:?]
        at com.vmware.identity.sts.auth.impl.BSTAuthenticator.doAuthenticate(BSTAuthenticator.java:119) ~[libsts.jar:?]
        at com.vmware.identity.sts.auth.impl.BSTAuthenticator.authenticate(BSTAuthenticator.java:85) ~[libsts.jar:?]
        at com.vmware.identity.sts.auth.impl.CompositeAuthenticator.authenticate(CompositeAuthenticator.java:54) ~[libsts.jar:?]
        at com.vmware.identity.sts.auth.impl.CompositeAuthenticatorPerformanceDecorator$1.call(CompositeAuthenticatorPerformanceDecorator.java:68) ~[libsts.jar:?]
  

Environment

VMware vCenter Server 7.0.x
VMware vCenter Server 8.0.x

Cause

Certificate Mismatch with Solution User and the respective Certificate Store.

Resolution

1. Restart all vCenter services by command below
service-control --stop --all
service-control --start --all

2. If the issue is not resolved by Step 1, renew the certificate using the vCert script.
Refer vCert - Scripted vCenter Expired Certificate Replacement