Cannot open Parallels Desktop on Mac anymore

Hi StephanieM1,
You have to be in recovery mode and perform these steps. Refer to this article. Also, if you have I/O error on the hard disk it will not mostly be detected in Disk Utility as First Aid helps to repair permissions not read and write errors.
 
today i got 4 more iMacs with the same problem.
can anybody tell me why this happens?
whats is the cause?
Hi ChristophS5, it's due to the Incorrect permissions to the /tmp folder on the Mac side.
Please try this solution and let us know how it works.
 
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