Lync 2010 does not prompt you for credentials when the credentials are deleted in Windows Credential Manager

Applies to: Lync 2010


Consider the following Scenario:
  • You log on to Microsoft Lync Online.
  • You save the logon password.
  • You log off Lync Online.
  • You delete the credentials that are used to connect to Lync Online in Windows Credential Manager.
  • You log on to Lync Online again.
In this scenario, Lync 2010 does not prompt you for credentials.

Note This issue specifically occurs when you have a Session Initiation Protocol (SIP) certificate that is saved locally.


To resolve this issue, install the following cumulative update:
2496325 Description of the cumulative update package for Lync 2010: April 2011


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.