For the past 3 days, users on my network have complained about not being able to access mapped drives (red X shows on mapped drive) and also remote desktop to network computers would sometime not work. When the clients try to browse to a network share, such as \\servername they get the following error message:
The system has detected a possible attempt to compromise security. Please ensure that you can contact the server that authenticated you.
Sometimes, I also get the following message:
Windows needs your current credentials to ensure network connectivity. Please lock this computer, then unlock it using your most recent password or smart card. To lock your computer, press CTRL-ALT-DEL and then press Enter.
Furthermore, I get error messages like the ones seen in the attached image.