Suddenly we are unable to access VPN from our server. We thought it may be due to the network card but after replacing, the same problem occurs. Error 691 that has to do with username and password not authenicated. We tried new username and passwords but same message appears.
We have not changed anything settings.
The ISP confirms the designated IP can be pinged.
We setup another laptop to see if we could VPN into this. It works based on the same IP. We are able to access.
What could have changed on our server settings?
What can we do?