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I put in a Parallels support incident for this back in Feb. and after a few emails back and forth they said this is a windows problem. I even referenced it working on VMware fusion and not Parallels and they would not help any further.And still no-go with Parallels 18.3
Hey @Grey Shadow, my apologies for this investigation taking so long and for not following up with you on the support ticket. Please understand that while we strive to provide Mac users with a great PC experience (as close to a real PC as possible), we do not own everything that happens within the Windows machine. When testing in our lab, we couldn't make Quick Assist work between two Arm-based PC computers either, I see that many Windows PC users report the same issue as well: https://answers.microsoft.com/en-us...p-broken/6f510a12-2d7e-4c67-8fa3-c1690baac5d9It works on „bare metal" too (Windows/ARM on Snapdragon).
So it's definitely a Parallels problem.
My support case (I opened one too. A couple of months ago) is „escalated" but obviously „dead". No responses from Parallels since January.
Time to move on. Away from Parallels.
@Grey Shadow, thanks so much for this feedback. When you say "it works", do you mean connecting "to" or "from", or likewise? I am trying to understand if network/location is the culprit. We will certainly do another try on this investigation, I understand how critical it is not to be able to connect to a remote machine. If you can add 5 cents about your use case and what you do with Parallels Desktop, I would be super grateful.@Dmitry@Parallels No. Sorry. Doesn't make sense to me, as it works on Windows/ARM(Snapdragon) and VMware Fusion/ARM.
Microsoft indeed had some problem during the upgrade phase with older/newer QuickAssist versions (Windows version / Windows-Store version). Even on Windows/x64 <-> Windows /x64. These have settled.
Currently I have to RDP into a "real" Windows/x64 machine and do Quick Assist from there.
Hey guys, @Grey Shadow, @JordanC4, @RickM16, @TomM31, @Ensoniq, @AndresM5, @SteveK14, the connectivity issue has been fixed in the recent Quick Assist app update v2.0.21.0 (check for updates in the MS Store library), works for me now and hopefully will work fine for you too.Both directions. On VMware and/or bare metal(Snapdragon Windows/ARM)
From and to Windows/x64. Every combination as long as no Parallels Windows/ARM is involved.

Great! Happy to hear it works for you nowConfirmed! Thanks for the info!
Hurray!!!! Thanks a lot whoever made this finally happen!)
NB: "Quick Assist" V2.0.21.0 is available since January 2022. I *think* it's the latest Parallels 18.3.1 that made it happen(?!)