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- Make sure the Skype for Business client is closed (not in the system tray).
- Open Windows Explorer
- Go to
- Lync 2013
% localappdata% %localappdata%\Microsoft\Office\15.0\Lync - Skype for Business
% localappdata% %localappdata%\Microsoft\Office\16.0\Lync
- Lync 2013
- Delete the folder with your Skype for Business login username in it.
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