Search for:

Available article translations:

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

  • 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


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.


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


33c4522b6fa9ca8e050f19b889fb58f1 1e5db16426987d561060acdf56d947b4 5de01269f8a616c8c62832c3bf8cb718 b0d2afa3ea1ba6ce10dddf5df618e6f6 1e0c43ccf6ca78fa6744efc9edbc0659 790d27220dd34433ff172f45c18cfb98 48e7cf384e3b46432e32e6040476f122

Was this article helpful?
Tell us how we may improve it.
Yes No