I have a network share folder that I was recently cleaning up permissions to. I took off the four individual names from the access permissions to the folder, and added a new security group (Universal) with standard Read/Write permissions to that folder, then added those 4 people to the group.
However... now nobody can see the folder. The users can see the other 9 folders in that shared drive, but the 10th is missing. I cannot see any security permission in the parent folder or in the folder itself which would cause it to be invisible to anyone, regardless of whether they have permission to open it or edit files within.
Edit: The file server (unlike the Exchange and DC) is Server 2008. Apologies for the incorrect information previously, I had not actually remoted into the file server directly before. However, for the share in question Access Based Enumeration is disabled.
Edit 2: As noted in a comment below, ABE was enabled. Confusingly, someone set up the shared area for the site using nested shares... \server\share\shareA\folders. While 'share' did not have ABE enabled, 'shareA' did. My lack of in-depth knowledge of the configuration delayed accurate diagnosis of the issue.