AVG 8 detects file user32.dll as trojan psw.banker4.apsa

One AVG 8 antivirus update, from 10/11/2008 (it could also appear on version 7.5) detects de system file "user32.dll" as the Trojan PSW.banker4.APSA.

And showing an error message it advises the user to delete this file

DON'T DO IT!!! If you do it your pc will reboot again, and again, and again...

Just click "ignore", open AVG and update again! Reboot and the problem should be solved!

If by any chance you choosed the option to remove the file and your pc is constantly rebooting, follow this steps to fix the problem:

  • Boot from the Windows XP CD
  • Press "R" to enter the recovery console
  • Choose your windows installation (usually number 1) and press enter
  • Press “enter” again when it asks you for your admin password. Or, if you have set an administrator password when you installed windows, enter that one
  • Write the command: copy c:\windows\system32\dllcache\user32.dll c:\windows\system32\
  • If it doesn't work, try to find another computer that has windows xp, go to the folder “windows\system32″ and copy the file “user32.dll” to a floppy or a usb memory. Then boot again from the windows cd on the broken computer and copy the file "user32.dll" to the folder “c:\windows\system32″
  • Reboot your pc and it should be ok. After booting the message from the AVG Anti-virus telling that "user32.dll" is a trojan should still appear. Click "ignore", update your avg anti-virus and everything should be ok!

Here you can find the official solution from AVG:

http://www.avg.com/support -> False postive “user32.dll” fix tool

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