Hi
Edit: I think I managed to find a fix for the below, it is in updating the Microsoft .NET Framework to 4.8.1 (the latest one since the writing of this), you can google the .NET framework and find the latest download from the Microsoft website, I don't think it's available in the standard Windows Update/settings. Everything seems to work as it should even after saving and closing the apps, I can re-open them without the error below and without having to restart the pc.
-------------
I also have this issue. Or at least something similar where the error message says the apps cannot communicate with one another. I've reinstalled the apps directly from the affinity website a few times and tried it once from the Microsoft store now.
It only happens when I open a file in one of the apps, edit it and save it. Once the app is closed after saving I cannot open it again and need to restart the entire computer to open the app again.
Interestingly, on the Microsoft store versions the apps would chase me to sign in but not allow me to actually do so, with a "please try again in a moment".
I've allowed in and out connections for the apps in the firewall, and added exceptions to the antivirus and antimalware apps and there's still the error message.
It only seems to be happening on my computer, but my laptop is ok. Both have the latest Windows 10 updates but only the desktop is misbehaving.
Can't attach the screenshot directly as the paperclip is stuck loading... I've tried adding the link to the screenshot though. https://1drv.ms/u/s!Apy_YxLt817jgs1tsHUGKasaVM-aZA
