Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.


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


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. 


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.


To resolve this issue, install the following update:

2881070 August 2014 update for Lync 2013 (KB2881070)

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!