Random ERR_NETWORK_IO_SUSPENDED in Windows applications (network itself *is* working)

Quite often Windows applications are stuck (frozen) with error ERR_NETWORK_IO_SUSPENDED.

(Typically observed in Chrome, but impacts also any other application, e.g. Edge)

When:

• after returning from sleep mode
• *but also* at random time

For how long:

• several minutes
• then the applications automagically resume to normal behaviour

What is impacted:

• all Windows applications at the same time
• except WSL, that is *not* affected (e.g. I can do a curl without any problem)

Network itself is not the cause!:

• other devices in my LAN still have access to Internet during the incidents
• WSL still has access to Internet too!

I had the impression I could have solved the issue after forcing a downgrade/upgrade of Windows, but the problem is there again (maybe since the last Windows update). Windows version is up to date. Already tried to reboot many times, of course. To no avail.

This issue is extremely frustrating, when you are are stuck in the middle of a sentence and have to look at your laptop during long minutes before being able to finish typing. (BTW, got stuck twice while typing the present question!)

I'm quite desparate with this. Don't even have a clue on how to investigate. Did not find anything interesting in Event Viewer.

Context:

• Surface_Book_3_1900
• Windows 10 Home 10.0.19044

Moderator note - Moved from Windows to Surface.