I am so sorry that I upgraded to V12. I'm running WinXP and Parallels version up thru 11 worked beautifully. Ever since going to V12 I've had nothing but issues. V12.1.2 would work, but every time I went into Desktop, I had to hit "Reset" and relaunch Windows before ANYTHING would work. After putting up with that for several weeks, I saw that they had an update to V12.1.3 and I hoped that would work better. WRONG!! It is far worse. The update never completed. It got half way thru and then gave me the "Unable to Connect To Parallels Service" error message. I followed the link to the knowledge base for that and tried everything in their instructions about the terminal. That didn't work. I then tried to uninstall V12 by clicking and dragging the icon to the trash bin, but all that did was have Parallels try to launch again and I was back to the "Unable to Connect To Parallels Service" error message. I tried to get a chat session going (even paid the $19.95), but have not been successful. I suppose they are dodging help calls because they don't know how to fix this mess. This is the absolute worst "upgrade" I've ever experienced.
Update @3:48 PM EST: Customer support got back to me. Support person took over my computer and downloaded a zip file (I think it was PDuninstall) that he used to uninstall Parallels Desktop from my iMac. He then installed the Version 12.1.3 that had started this whole mess. He did get it to complete the installation and everything seems to be working again. Also, he said he would credit my charge account for the $19.95 because I had only updated to V12 in early December of 2016. I'll keep my fingers crossed and may skip the next "Update". Version 12 has been nothing but a headache. I wish I had stayed with V11. It appears that uninstalling V12 is necessary before installing an update. You would think they would build that into the update process, but what do I know. Also, in the knowledge base they should have a link to the uninstaller if that is what they want you to do.
Last edited: Jan 28, 2017