Unlike Windows XP, Windows Vista allows the standard (non-admin) users to change the time zone used by the system. This is obviously a big issue for PC TimeWatch.
Depending on the Windows Vista edition that you are using, there are two different ways of solving the problem:
Windows Vista Ultimate, Business and Enterprise
- Login to Windows Vista with an administrator account.
- Start | Run| secpol.msc.
- Go to Local Policies | User Rights Assignment.
- Open the Properties window for the Change Time Zone privilege.
- Remove the Users group from the list.
- Possibly add to the list any non-admin account to which you still want to grant the Change Time Zone privilege..
- Close the MMC console and reboot.
Windows Vista Home Basic et Home Premium
For an unknown reason, the gpedit.msc and secpol.msc snap-ins are not available in these editions of Windows Vista. In order to disable the Change Time Zone privilege for standard users, we had to write a little utility that partly replaces the missing MMC snap-in.
- Please download http://www.mainsoft.fr/Files/SetTZPriv.zip and unarchive the SetTZPriv.exe in a folder of your choice.
- Open a Command Prompt window and change the current directory for the directory where you have stored SetTZPriv.exe..
- Enter the following command:
SetTZPriv Users OFF
This will deny access to the Change Time Zone privilege to all standard (non-admin) users.
- If you want to grant this privilege to a particular standard (non-admin) user, enter the following command:
SetTZPriv user_name ON
After following one of these two procedures, the users removed from the list will no longer be able to change the time zone on your system.
The complete syntax of SetTZPriv is as follows:
SetTZPriv <account_name> ON|OFF [machine_name]
The <account_name> argument is mandatory and specifies either an individual account or a group name. The machine_name argument is optional and specifies on which system the modification must be made. By default, this is the local machine.
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