Those who followed the recommendation and deleted the file discovered that they either could not boot up their machines or they continually rebooted. Unsurprisingly, that left the forums filled with people seeking advice.
Later the same day the company issued another update which corrected the error.
On its support pages, AVG advised those who could still run their computers to download a utility to delete the update files then download the newer update. For those who couldn’t boot up, the option was to use the XP recovery console on their installation disc, disable AVG, and restore the user32.dll file.
On the AVG free forum, Zbynek Paulen of AVG Technical Support wrote:
"Unfortunately, the previous virus database might have detected the mentioned virus on legitimate files. We can confirm that it was a false alarm. We are sorry for the inconvenience and thank you for your help."
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