We have about 120 machines that are randomly losing their mapped drives that are connected through GPO. We also have 1 server that has a mapped drive to another server that can not make the connection. The workstations that are having issues at times connect and at others do not. This issue started about a week ago when MalwareBytes sent a bad update and locked most of our workstations to the point where we had to uninstall MalwareBytes from those systems. The two servers that we map drives to also had MalwareBytes on them. Sometimes if we do a gpupdate /force it fixes it but not all the time and the issue eventually comes back.
We do not have any problems mapping drives from those workstations to the servers through UNC. That is how the drives are being mapped through GPO.
Most workstations are Windows 7 but it also happens on Windows 10. We are seeing this on a few workstations that also did not have MalwareBytes on them so it leads me to believe this is an issue with the two servers that had it installed.
On the workstations when you click on the drives you get the following error..