Cannot add, remove, or move contacts or groups at this time

When attempting to add contacts to your Skype for Business contact list you receive the following error:

There are a number of different causes for this error, but the most common solution is to delete the SIP profile for the Skype for Business user.  To delete the SIP profile for a user on a Windows workstation, follow the instructions below:

  1. Close Skype for Business completely by expanding the menu in the client next to the cog. Then select file > exit.
  2. Open Windows Explorer and navigate to the following folder:

                  Skype for Business 15 - %localappdata%\Microsoft\Office\15.0\Lync

                  Skype for Business 16 - %localappdata%\Microsoft\Office\16.0\Lync

  1. Delete the sip_username directory that matches the sip address of the user experiencing the issues.  This directory will be rebuilt when the Skype for Business client is restarted the next time.
  2. Restart the computer.
  3. Restart the Skype for business client.

The SIP profile folder and cached information will be rebuilt and the issues above should be resolved.

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