Zip and video file size reduces too much. Some files disappeared

I scanned my pc with zip files and all files scan option. Then after popups, I had to uninstall the product. But I think it was not a completely successful uninstall (not sure). My zip files 1GB to 1 kb reduces (example file sizes). Also same applies to video files like mp4. Some files lost (not sure, I had .m extensioned matlab files and I cannot find some of them). How can I restore my files? This was the free edition.

Hi Aap,

Could you be more specific with the issue also by providing the screenshot(s).
You can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions.
Also let us know which AVG trail product you used.
Keep us posted.

I observe that all corrupted files are modified at same date. 25 March 2020. How can I see uninstall or virus scan dates of a previous install. Also, is it possible to determine which program modifies a file?

I observe that all corrupted files are modified at same date. 25 March 2020. How can I see uninstall or virus scan dates of a previous install. Also, is it possible to determine which program modifies a file?

Thank  you for the information, Aap.
May I know whether you received any threat detection popup from AVG Antivirus free recently when you tried to access these Zip files?

This is just one example from a backup and real one. The zip file on desktop was reduced in size while scan all zip files by extracting them. I am not 100 per cent sure this is because of Avg. But I think this is the case. This is from a free version.

User-added image

No but I did not try to unzip file

It is not trial one. It is the "free" antivirus which is downloadable without a time restriction or trial period. The one with no payment