The registration is lost every time Parallels Desktop is restarted

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Symptoms

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Cause

Resolution

  1. First of all check that the issue is not related to Mac misconfiguration:

  2. Quit Parallels Desktop
  3. Launch Terminal (Application > Utilities > Terminal)
  4. Execute the commands:

    sudo su
    

(type in the password from Mac user account)

   rm -rf ~/Library/Preferences/com.parallels.*


    mv /var/root/Library/Preferences/com.parallels.desktop.plist var/root/Library/Preferences/com.parallels.desktop.plist.old

Start Parallels Desktop, register it and check the issue.

NOTE: you must register with your Parallels account to which your license key is registered. Otherwise you will receive an error message.

If the issue still persists, go back to Terminal window and ping our registration services:

    ping registration.parallels.com 

    ping webservices.pdfm*.parallels.com

Note: Put the version of your Parallels Desktop instead of *, i.e if you are using Parallels Desktop 11, the command will be:

    ping webservices.pdfm11.parallels.com

The output should be something like:

   64 bytes from 199.115.105.22: icmp_seq=0 ttl=50 time=225.452 ms
   64 bytes from 199.115.105.22: icmp_seq=1 ttl=50 time=225.459 ms
   64 bytes from 199.115.105.22: icmp_seq=2 ttl=50 time=225.560 ms

If there is no such output then Parallels services are blocked with Firewall and you should contact your system administrator.

If the ping is higher than 300-400 ms, then your Mac attempts to connect to our servers but do not receive the replies. You need to switch to faster Internet connection.

If the above solution didn't help please apply the following:

This issue may be caused by Mac OS X misconfiguration: if Mac OS X has several user accounts with the same IDs, particularly with ID=0. This ID should belong to root user account only. For more information please visit https://en.wikipedia.org/wiki/Superuser

To check the user accounts' IDs please execute the following command in Terminal (Finder > Applications > Utilities > Terminal):

    dscl . -list /Users UniqueID                (hit Return/Enter)

The output supposed to show you the list of all users (system as well) with their IDs. Please check the users without underscore in the beginning:

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If you find any user account with ID=0 (except of root) - this is the root cause of the issue with Parallels Desktop.

NOTE: Please do not change user IDs on your own. Contact Apple Support for further assistance.

After non-root users' IDs are fixed, please try to install/start/activate Parallels Desktop again.

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