Thursday, December 15, 2022

Can't sign in to Lync 2013 by using a cached certificate in Lync online hybrid deployment - Microsoft Support [MS]

Symptoms

You can't sign in to Lync 2013 when the cached certificate is expired.

Cause

This issue occurs because Microsoft Lync 2013 uses the cached online certificate for the on-premises AutoDiscover service when Lync 2013 signs in, which fails. Then, Lync 2013 tries to achieve a new certificate from an on-premises service. The achievement fails too. Therefore, Lync 2013 sign-in fails. 

Workaround

To work around this issue, click Delete my sign-in infor in the sign-in window of Lync 2013 to remove the record of your logon ID and password from your computer's memory.

Resolution

To resolve this issue, install the following update:

2881070 August 2014 update for Lync 2013 (KB2881070)

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