What's it like to be Jason at work?! Here's a peek into one of my typical support calls.
"Opening any file on shared folder get's an 'access denied' error".
Two computers are sharing folders for each other. When John opens Bob's shared folder and tries to open an Excel file, it pops up a window saying 'access denied'. This happens with all file types. Hhmm, everything worked fine yesterday and nothing was changed today.
If I try and 'copy' the file from Bob's folder onto John's computer, same error. If I copy that file onto a USB memory stick, pop it into John's PC, he can open the file just fine. I disabled the Windows Firewall on Bob's PC - didn't fix it. Next, I disabled file sharing of the folder in question on Bob's PC and rebooted. Then, I re-enabled file sharing for that same folder - ding, ding - fixed it!
Shared files now open without error! Customer Happy - Me Happy :o)