Avast does not allow installation

Hi there. I tried already to find an answer to my problem by reading comments to virus related articles, unfortunately unsuccessful. I started by finding and downloading Manager but ended up to now with several tries to install but Avast detected a virus and does not allow to go any further. I tried to install from the msi and zip file with same result. Can anyone help with this?

If you search the forum for “Avast” you will find many topics on this. Avast is known to generate a false positive for Manager. Disable Avast and notify them of the false positive.

Thanks. I did not search specifically for Avast, just for virus and noted many virus scanners act similar. Notification was an automated process but they did not reply yet.