Anti-Virus AVG Update Deleted System File

Anti-Virus company AVG confirmed that their recent update for AVG by accident deletes important system file. Unfortunate update, identifies user32.dll as trojan and places it under quarantine. This leads to inability to restart the computer. During Windows load users receive blue screen of death (BSOD) with the error indicating that system can't find winsvr, errorc00000135.

AVG already released a solution on their website on how to fix the problem in this situation.