First published on TECHNET on Jul 06, 2012
If you're experiencing sign-in issues using Microsoft Lync 2010 together with Microsoft Lync Online in a Microsoft Office 365 environment, see How to troubleshoot sign-in issues in Lync Online from Microsoft Support.
This article details how to troubleshoot sign-in issues and includes the following topics:
- Scoping the sign-in problem
- Lync Online sign-in error messages
- Resolve Lync 2010 client-sides issues
- Resolve Lync cached endpoints
- Resolve certificate-related errors in Lync 2010
- Resolve DNS and network-related sign-in problems
- Bypass Lync 2010 Autodiscover and DNS resolution
- Resolve user identity and Office 365 authentication system issues in Lync 2010
- Next steps
Lync Server Resources
- Lync Server 2010 Documentation Library
- DrRez blog
- NextHop blog
- Lync Server and Communications Server resources
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Updated May 20, 2019
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