None of these solutions worked.
I've done some tests under XP32 and Vista64 (dual boot machine). These are the conditions:
- I've created the folder A with restricted access only for the 'admin' user (read/write)
- I've created the folder B with restricted access only for user X (read/write)
- I've created the folder C with restricted access only for user Y (read/write)
I've noticed the following (the same for both the O/S):
1) If I log the folder A, B or C with the right user THE FIRST TIME I boot up the system, the access is permitted. If I close the Exporer window and try to open the folder another time, I don't have to type the user name and password again. The access to that folder is always permitted untill I reboot the machine.
2) If I log the folder A, B or C with the right user I cannot log another folder in that Windows session. If I've obtained the access to the folder B for the user X, if I try to log to the folder C with the user Y I get the error message. I can't log to another folder untill I reboot the machine.
3) If I intentionally try to log to a folder with a wrong user I cannot log to ANY folder in that Windows session. I've to reboot the machine and try to log correctly, but ALWAIS to one folder at time (for each Windows session).
I've experienced the same behaviour both in XP32 and Vista64 environments.
The result is that I cannot use the restricted access functionality.