C:\Documents in XP system? And then what? Set \ User Name \ Apply? Under Data\Tencent\QQ, set the permission of the SafeBase folder to completely deny.

Under XP system, if you can't see the security tab, please make sure that the account logged into windows has administrator rights. If you still can't see it, please make the following settings, enter Tools-Folder Options-View, and remove the check mark as shown in the figure.

WIN7 system, under C:\Users\ user name \AppData\Roaming\Tencent\QQ, set the permission of SafeBase folder to completely deny, which is the same as that of one party.