AVG Deep Scan finds avast! sandbox Rootkits?

I used to have avast! installed instead of AVG around 2-3 years ago.
Now, every time I do a Deep Scan in AVG, I get "143 unsecured threats found", all of which are Rootkits within some sort of "C:\avast! sandbox" of files that point to .NET Core exe's and dll's. (I'm a software developer)

When I navigate to my C:/ drive even with hidden files on, I cannot see this folder.

Clicking "Resolve" or "Resolve All" in AVG does nothing.
I know these are not actual threats, however AVG thinks they are and it is rather annoying. I cannot get rid of them.

I've attached an image below which shows an example of the issue.

Conclusively, how can I get rid of these false threats and stop AVG picking them up OR figure out how to resolve them? Thanks

Hi Karam,

We are sorry to hear this.

We will help you to resolve the issue.

We haven't received the screenshot from our end.

Please share us the screenshot of the scan result with the rootkit files to investigate further.

You can post the screenshot here in your topic. Click on "Answer" & then click on the "Image" [mountain symbol] & follow the instructions.

Keep us posted.

Hello Jan.
I would like to confirm that C:\avast! sandbox\ folder is a part of Avast product. I would like also like to confirm that this is a false positive.

I repaired my AVG, restarted, re-ran a deep scan and the same errors appeared and both trying to "Resolve All" as well as "Resolve" each one individually just makes it say "Resolving" for about 5-10 seconds and then nothing happens. AVG is still unable to resolve them and provides no error message.

Hi Karam,

We are sorry to hear this.

We will help you to resolve the issue.

We haven't received the screenshot from our end.

Please share us the screenshot of the scan result with the rootkit files to investigate further.

You can post the screenshot here in your topic. Click on "Answer" & then click on the "Image" [mountain symbol] & follow the instructions.

Keep us posted.

I have had the same problem, but when the first rootkit was found in the C:\avast! sandbox\ folder scan holds and does not continue.

I had reinstalled AVG, but this did not remove the problem. I have even performed a windows reset to remove all software from the PC, even this did not remove the problem. Performing a scan resulted in the same found rootkit. The scan stops as soon as the first rootkit was found and AVG did no longer respond from that point. 

2 months later I have installed an AVG update. Now it does no longer recognize a rootkit in the C:\avast! sandbox\ folder. 

Still, I am not sure if this was an actual rootkit or a false positive.
I am still confused about the C:\avast! sandbox\ folder since I can not find it when show hidden folders is turned on.