HI Dilip Patel, Vipul (Cognizant)
After Check the CRL Distribution Point download the CRL on the server. This link https://techcommunity.microsoft.com/t5/iis-support-blog/crl-checking-by-iis/ba-p/348170will be pointing to one of the CDP servers hosted by the CA. Verify CRL and define your CertCheckMode (above link detail). Restart IIS. If needed you can clear CRL cache https://stackoverflow.com/questions/75360269/how-to-disable-certificate-revocation-list-crl-caching-on-iis-10-0
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