Hi dharmendrarhce
This error appears if the key length of the root CA is greater than 2048. Keys with 4096 and greater length are causing issues.
If you have a Microsoft CA you can do the following to resolve your issue:
1. Create a CAPolicy.inf in C:\Windows
2. In the CAPolicy.inf put:
[Certsrv_Server]
RenewalKeyLength=2048
RenewalValidityPeriod=Years
RenewalValidityPeriodUnits=10
3. Renew the CA root certificate and accept regenerating the key and you’re done.
4. Reset PSC and VCSA certificate and import the new generated SSL certificates again.
Regards,
Mohamad