First, restart your computer in Safe Mode (only XP and Vista) and see if you can open the file or programs in question. If so, it’s not a “real” permission issue, it’s a program or process on your computer that is giving the error.
Norton Internet 200X, Bitdefender, AVG anti-virus, Trend Micro 200X can all cause this problem. If you have any of these programs installed, make sure to disable them and test it you can run programs, open files, etc.
You might read this forum for help.http://forums.techar...tems/909948.htm
You may have to take ownership of files and programs on your computer. The problem here is that it suggests more problems if this works, like a corrupt user profile in Windows.http://support.micro...om/?kbid=308421
Kellys may have a easier fix below.
Download and run #12 lefthand side EXE (lnk and regfile) Fix for Windows XP http://www.kellys-ko...m/xp_tweaks.htm
Save the REG File to your hard disk. Double click it and answer yes to the import prompt.