Parallels 14 Mounter not working on Mojave

[xgrep]

I'm a past Parallels user (and VMware and VirtualBox) evaluating Parallels 14 for possible migration from VirtualBox. It seems fine for my needs (and a lot faster), except that I can't mount any virtual disks on my Mac. I don't need to mount the hdd when the guest isn't running, so didn't try that, but when I try to open my Windows 10 VM by opening the pvm file or the hdd inside it with the Mounter app, nothing happens. I don't know where to look for an error log. I tried installing the Toolbox, but that didn't have anything that helped. Right now, I'm at a loss as to how to proceed, and I don't even know how to submit a support request without Twitter or FaceBook or some other social media tool that I don't use. Thanks in advance for any suggestions.

 

[Maria@Parallels]

Hi @xgrep ,and did you try to reinstall Parallels tools? If not please try and check the issue again.

 

[xgrep]

Thanks, that was a good suggestion. And, while I was at it, I uninstalled VirtualBox Guest Additions. And, of course, rebooted in between each operation. Unfortunately, it still doesn't work.

 

[MatthewI2]

I'm having problems with this too.
I've gotten it to work with my Windows VM. It seemed initially to do nothing, but started working after I reinstalled Parallels Tools.
No luck so far with my Linux VM (Ubuntu 18.04). I installed Parallels Tools on it (maybe for the first time - the procedure seemed new to me) and the most I've managed to achieve is that a network drive appears:

But when I attempt to connect to it, the connection fails and I get error messages such as this one:

The specific error messages may differ somewhat depending upon whether the Linux VM is currently running, paused or shut down, but the end result is the same: I don't get a drive to mount in Finder. Meanwhile, the Linux VM itself seems to be working fine - no obvious sign of file system problems there.
Does anyone have any helpful suggestions?