If you see The server certificate did not match any of the expected values, Error 0x8a15005e when running WinGet commands, see this post.

If you receive ERR_CERT_REVOKED when you visit a website, then it means that SSL certificate used by the website has been revoked by its issuer.

Once a realized this I decided to remove the CA on that server and try installing Certificate Services on the other server, the one that a couldn't encrypt a file on, instead. <BR><BR>But when I ...

Applies to the 'Configuring Active Directory Certificate Services' objective of Exam 70-640 TS: Windows Server 2008 Active Directory Configuration.