Hello Ami,
It is possible that remnants of the previous Certification Authority installation are interfering with the new installation. Here are some additional steps you can take to troubleshoot and resolve the issue:
- Check the certificate store: Verify that the CA certificate is present in the certificate store. You can view the certificate in the Certificate Services MMC console by navigating to "CA Name" -> "Properties" -> "View Certificate".
- Check the CA registry settings: Verify that the CA registry settings are correct by running the following command in an elevated Command Prompt:
certutil -getreg CA
This will display the registry settings for the CA.
- Check for duplicate entries in Active Directory: Ensure that there are no duplicate entries for the Certification Authority in Active Directory. You can use the ADSI Edit tool to check for duplicate entries.
- Check for permissions issues: Verify that the service account for the Certificate Services has the necessary permissions to access the certificate store. You can check the account in the Certificate Services MMC console by navigating to "CA Name" -> "Properties" -> "Security" -> "Service Account".
- Try recreating the Certificate Authority: If the above steps do not resolve the issue, you may need to recreate the Certification Authority from scratch. Be sure to uninstall the previous instance of the CA and remove all remnants of the old CA from the registry and Active Directory before installing the new CA.
- Check the event logs: Review the event logs for any errors or warnings related to the Certificate Services. This may provide additional clues as to what is causing the issue.
- Try restoring the CA from a backup: If you have a backup of the previous instance of the CA, you can try restoring it to the same server or a different server and then attempt to repair or upgrade it.
Maybe this is not your solution, but I hope I help to continue your investigation.