"Do not back up virtual machine" checkbox checks itself

I have the latest Parallels desktop and OSX versions installed.

My issue occurs in guest operating systems "Windows 7" and "Debian Linux."

The virtual machine configuration page "Security" includes a checkbox "Do not back up virtual machine". I CLEAR this checkbox. However, after virtual machine is shut down and restarted, the checkbox becomes SET.

I would like to keep the checkbox CLEARED so that my virtual machines ARE backed up by Time Machine.

Any suggestions?

 

Ok, try this:

Step #1. Uninstall Parallels Desktop using Terminal

1. If you are unable to uninstall Parallels Desktop by dragging it to Trash you may use these commands:
Launch Terminal application from Applications/Utilities
Paste the commands into Terminal (one by one; hit return after pasting each command):
sudo su

(type your Mac user password (your Mac user should have Administrator's privileges) and hit return. You will not see characters while typing)

for pid in $(ps aux | grep "Parallels Desktop.app" | awk '{print $2}'); do echo kill -KILL $pid; done

for kext in $(kextstat | grep parallels | awk '{print $6}'); do kextunload $kext; done

rm /System/Library/Extensions/prl*

rm -rf "Parallels Desktop.app"

Step #2. Run Repair Disk permission to ensure that Mac grants enough permission to Parallels Desktop to access resources needed for its full funtionality.
Open Application Folder
Run Disk Utility
Click Mac HD and click on Run Repair Disk Permission
Restart Mac

Step #3. Install Parallels Desktop

 

Actually, I have also been told to try this, it seems simpler than the above, so I would try this first:

Do not backup with Time Machine option does not work: http://kb.parallels.com/en/112152