Signing in Microsoft Skype for Business 2015 (Lync 2013) sometimes fails or loops in a corrupted state after you unlock the computer in the sign-in progress.
Additionally, you receive one of the following error messages when the issue occurs:
            Additionally, you receive one of the following error messages when the issue occurs:
- INVALID_SIP_ADDRESS
 - E_UNEXPECTED
 - INVALID_OBJECT_STATE