How to Fix Parallels Desktop 9 on OS X Yosemite DP6
Following up on today’s Parallels Desktop 10 news, we wanted to provide a quick tip on getting Parallels Desktop 9 to work on the latest developer build of OS X Yosemite. Parallels Desktop has worked fine throughout the beta process for Yosemite, but with the release of Developer Preview 6 on Monday, Parallels no longer opened, reporting that the app was “unable to start Parallels services.”
For those who need to access Parallels Desktop 9 with the Yosemite Developer Previews, user bradhs123 over at the Parallels forums offers a solution. Open Terminal and type in the following command, along with your admin password when prompted:
sudo /Applications/Parallels Desktop.app/Contents/MacOS/Parallels Service.app/Contents/MacOS/prl_disp_service -e
You may get a warning that the “Application was not created in the main( ) thread.” Just quit Terminal and try to open Parallels Desktop 9 again. From our testing, the app will open and operate normally.
Parallels has acknowledged the issue and promises a fix in the next update of the software, although there’s no word yet on when that may be.
Update [2014-08-26]: As noted in our Parallels 10 Review, the company has issued a statement promising to fix Parallels 9 for Yosemite, with an update expected in “early September.” The only caveat is that the fix is only promised for the final public build of Yosemite, and might not work on any remaining Yosemite Developer Previews before then.