Copy/Paste not working

Hi. You can reinstall parallel tools, if you run the vm and click "actions>reinstall parallel tools". Then the normal option for inserted DVDs opens and you can choose whether you want to display the files. Here you can select the setup.exe of the Parallel Tools. A little bit complicated, but doable.
Okay, I also had to google-search to find this way ....

 

I have the same problem. I am running 19.4.0 on a silicon Mac. My vms are also macOS... but I don't think that's relevant. Copy/Paste stops working almost daily. I can't tell if it's just a result of Suspending or if it's just a matter of time. Reinstalling Parallels Tools fixes it for me each time... but requires a Windows Restart which is painful because of all of the active work I sustain, which is the whole point on my vms.

I ran a new update I found this morning for 19.4.1, and oddly after resuming one of my vms, it automatically installed Parallels Tools again. Not sure why. I'll check back if this patch fixes the copy/paste issue.

 

(... I said in my post I have to restart Windows... but I meant I have to restart the MacOS vm. I'm not running Windows)