I have a point to site VPN working from two computers to Azure. It has been working for months with no issue.
Today, both computers fail to authenticate with the message:
The remote access connection completed, but authentication failed because the certificate that authenticates the client to the server is not valid. Ensure that the certificate used for authentication is valid.
(Error 853) For customized troubleshooting information for this connection, click Help.
The certificate is supposed to expire on 10/10/2021 so that isn't the issue.
Help please.