Cannot access C$ or Admin$ on some computers but can on others. All computers are part of the same domain, same OU, same GP's. Some computers are XP and some are Vista, however I have had success and problems on both OS's. All users computers are configured the same, and I am logged in from the DC trying to run: \\<computer name>\C$ .... some will work and others will not. Again, the PC's should be configed the same, the firewalls are completely off, no antivirus (this issue spawned from trying to install symantec endpoint clients from the deployment wizard to all computers) Windows defender is off, Network Discovery is on (on Vista machines) Simple file sharing is off.
I am a local admin by being a member of Domain Admin, which is set as a admin on every local computer.