Giovanni

Go to Windows update, update Windows Defender Now update to Security Intelligence for Microsoft Defender Antivirus to KB2267602 (version 1.385.672.0) or higher. The warning about Trojan:Script/Wacatac.H!ml disappears!!! https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Trojan:Script/Wacatac.H!ml

I don't know if this request will have any possibility of development... but as far as I'm concerned I found this limitation to be of no small importance. In any...

Unfortunately, I still haven't been able to understand if it's a problem with my PC or with QGis. I don't have to access via proxy, I have direct access to...

> It is normal. You have to check the URL https://plugins.qgis.org/plugins/plugins.xml?qgis=3.36 as requested. With this address there is no access problem except that from within QGis access to the official...

All this with a fresh and clean installation

I did a clean install via OSGeo4W. My internet connection via browser (Google) is normal, no problems. The previous version of QGis (3.36.1) worked without problems.