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Parallels Desktop failed to start due to "Unable to connect to Parallels Desktop" error

APPLIES TO:
  • Parallels Desktop 9 for Mac
  • Parallels Desktop 8 for Mac
  • Parallels Desktop 7 for Mac
  • Parallels Desktop 6 for Mac
  • Parallels Desktop 5 for Mac

Symptoms

Parallels Desktop failed to start due to Parallels Dispatcher crash and "Unable to connect to Parallels Desktop" or "Unable to connect to Parallels Service" error is displayed:






Problem appears due to incorrect handling of inconsistent Mac OS X networking configuration.

Resolution

If you are using Firewall or some network filtering software like "Little Snitch" application, please, make sure, that Parallels Desktop is in the list of approved applications.

1) Please start terminal (Application -> Utilities -> Terminal) and type the following commands (hit Return after each of them)
 
sudo cp /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist /Library/Preferences/SystemConfiguration/NetworkInterfacesBackup.plist


sudo rm /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist

Now, please, reboot.

2) If this doesn't help, next two commands will reset MacOS X networking configuration:
 

sudo cp /Library/Preferences/SystemConfiguration/preferences.plist /Library/Preferences/SystemConfiguration/preferencesBackup.plist

sudo rm /Library/Preferences/SystemConfiguration/preferences.plist

Now, please, reboot one more time.
 
NOTE: all Mac networking settings will be rolled back to default and you will have to restore the VPN connections configuration manually  in case you use them.

Anytime it will be possible to restore original network configuration by copying backed up in your home folder NetworkInterfaces.plist and preferences.plist to the original location:
 
sudo cp /Library/Preferences/SystemConfiguration/preferencesBackup.plist /Library/Preferences/SystemConfiguration/preferences.plist


If you are using Parallels Desktop 4.0 for Mac, please revise the solution from Knowledgebase article 5772

If the solution did not help and you still receive 'Unable to connect to Parallels Service' error, please check another Knowledgebase article 6694 (suitable for Parallels Desktop 4.0 for Mac only):

Search words:

Unable to connect to Parallels Desktop

Parallels Desktop failed to start

PD




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