Windows 10: Every .zip file/folder that I download is "invalid"

[COLOR=rgba20, 20, 20, 1]I've been trying to fix this problem for a few months now. This was not an issue when I purchased my PC. Every time I download a zip file I get an error that reads "Windows cannot open the folder. The compressed zipped folder 'C:/Users/Username/Downloads/filename.zip' is invalid."[/COLOR]

[COLOR=rgba20, 20, 20, 1]I've read that viruses/malware can cause this problem. I bought malwarebytes which didn't find any infected files. I tried disabling my security settings in System Mechanic while downloading zip files and that didn't work either. The malware killer in System Mechanic didn't detect anything malicious either. I even bought a new mesh wifi system thinking slow download speeds could be messing up the download process, but that hasn't helped either.[/COLOR]

A friend of mine suggested that System Mechanic, a registry cleaner, is likely the cause and I should reinstall windows. Is that a good idea?

[COLOR=rgba20, 20, 20, 1]Has anyone else had this problem? Or know of any solutions that I'm missing?[/COLOR]


[COLOR=rgba20, 20, 20, 1]Thank you in advance! Any suggestion are much appreciated.[/COLOR]

[COLOR=rgba20, 20, 20, 1]Just to be comprehensive not sure if it's relevant, here's a little more info about my computer:[/COLOR]

[COLOR=rgba20, 20, 20, 1]CPU: Ryzen 5 3600 3.59ghz[/COLOR]

[COLOR=rgba20, 20, 20, 1]GPU: Nvidia RTX 2060[/COLOR]

[COLOR=rgba20, 20, 20, 1]16gb of RAM[/COLOR]

[COLOR=rgba20, 20, 20, 1]Windows 10 Home, 64bit updated today[/COLOR]

[COLOR=rgba20, 20, 20, 1]1tb HDD[/COLOR]

[COLOR=rgba20, 20, 20, 1]230gb SSD[/COLOR]

:)

 

Folders with zip files

I have like 30 or more folders and everyone of them has only one single zip file.
How can I extract all zip files inside of all folders?

 

Folders with zip files

just go to the root folder and do a search for all zip files, then select all and extract where you want.

 

invalid compressed zip folder. The compressed (zipped)folder"C database.zip is invalid.

I have several Zip Folders that get the Invalid error message