[Updated] AVG antivirus removes user32.dll Print E-mail
Written by Hans Straat, Monday, 10 November 2008
Antivirus  AVG released a virus update last weekend that removes the user32.dll file. This means Windows will not function anymore.

The reaction from AVG was very fast. They released as soon as the error was discovered a new dat file with the error fixed. And provided a solution for those already with a malfunctioning windows computer.

The official quote from AVG

Unfortunately, the previous virus database might have detected the
mentioned virus on legitimate files. We can confirm that it was a
false alarm. We have immediately released a new virus update
(270.9.0/1778) that removes the false positive detection on this file.
Please update your AVG and check your files again.

The system can be restored by following the steps in one of the
comments on forum (using safe mode or recovery console and copying
c:\windows\system32\dllcache\user32.dll into the right location)

If you need to restore deleted files from AVG Virus Vault you can do
it this way:
- Open AVG user interface.
- Choose "Virus Vault" option from the "History" menu.
- Locate the file that was incorrectly removed and select it (one
click).
- Click on the "Restore" button.

We are sorry for the inconvenience and thank you for your help.
You can get updates here http://www.avg.com/download-update
Update 12/11/2008
Avg released 2 tools to fix the user32.dll bug.
 
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