Hi - we recently upgraded one of our 2008 r2 servers to 2012 r2. This was an actual upgrade, not a format and rebuild. Ever since the upgrade, the server that was upgraded is not able to access shares to another 2012 r2 server. But it still can access shares on other 2008 r2 servers. UAC is turned off on both and I am local admin. The shares are set up properly. Below is the error when trying to access shares from file explorer and when trying to run a robocopy script:
The specified network name is no longer available