Stef,
Let me help you with this. Please be informed that if you remove the AVG Free Antivirus from your PC, then the files that are in quarantined won't get restored into your PC. Those files will be stored safely and it won't affect your PC again. Since you have mentioned that you are uninstalling AVG Free Antivirus due to a error, may I know the exact error you are encountering with AVG Free Antivirus? If possible, please share the screenshot of the error to assist further.
Hello! So I want to uninstall AVG in order to maybe install it again(because I am getting an error) and if I uninstall AVG without removing quarantined files first is that dangerous for my computer? (AVG free antivirus is the program I am asking about)
Ok thanks for the info! The error is the one that says UI failed to load that almost everyone on the April update of Windows has(I mean not everyone but I saw a lot of people on the support community reporting that. There it is in the included picture