Invalid File Signature Solution

Hello Edric,
I apologize for any inconvenience caused. The issue might be because of corrupted/missing or old/previous AVG traces are getting conflicted with recent AVG updates. We always recommend our customer to have updated version of AVG Protection, if you're receiving "Invalid file signature" error message while AVG protection updates, then I request you to remove AVG completely along with any previous traces using the AVG clear tool/AVG Remover tool and then do a fresh installation of AVG. This will ensure that none of the previous traces of AVG are left on your computer and you have an updated version.
To Answer your Questions:
1: Currently, we have to reinstall AVG protection to fix the update issues.
2: We always recommend our customer to have updated version of AVG Protection, so there is no need to wait for a solution.
Best regards,
Alok.

Hello

I see many people have problem with Invalid file signature when updating its avg and I have the same problem too

I see this one thread about invalid file signature Avg Failed To Update Virus Definition And Program Version... | AVG

The dev name Ranjani say that the fastest solution is to do re-installation and that the problem have been escalated to senior team and he will give info soon.

My question is this :
1. Is there any solution that AVG is working for this problem rather than reinstalling or not ? 
2. If I want to wait other solution from AVG is it safe for my pc while my virus definition will be outdated ? 

I asking this cause I see no more response in the thread that I read so I dont know for sure if there is any other solution to this problem, or reinstalling is the only way

Hello Alok, thank you for the reply

But you still don't answer this one question of mine. Is ther any chance for my other PC to get this problem too ? (so far my other pc AVG still updating just fine)

And should I reinstalling AVG in my other PC that don't have this problem yet ?

Edric,
It is hard to guess that your other PC might also experience the same issue. However, you do not have to re install AVG beforehand. We only recommend you to do it if you experience any issues with updating.

Hello Edric,
I recommend you to use both AVG Remover and AVG Clear tool for best result. You can follow the instruction ( http://support.avg.com/SupportArticleView?urlname=How-to-troubleshoot-issues-after-upgrade-to-the-latest-AVG-antivirus-product ) to run AVG Remover tool and AVG Clear tool.
-We are working very hard to fix all the bugs related AVG, so the issue should not occur again.
- Yes, the correct Size for AVG Free Antivirus offline installer is 236 MB and it is very safe to download/install AVG Free Antivirus.
Best regards,
Alok.

Hello Edric,
I apologize for any inconvenience caused. The issue might be because of corrupted/missing or old/previous AVG traces are getting conflicted with recent AVG updates. We always recommend our customer to have updated version of AVG Protection, if you're receiving "Invalid file signature" error message while AVG protection updates, then I request you to remove AVG completely along with any previous traces using the AVG clear tool/AVG Remover tool and then do a fresh installation of AVG. This will ensure that none of the previous traces of AVG are left on your computer and you have an updated version.
To Answer your Questions:
1: Currently, we have to reinstall AVG protection to fix the update issues.
2: We always recommend our customer to have updated version of AVG Protection, so there is no need to wait for a solution.
Best regards,
Alok.