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Lync 2010 can't connect to the Lync Online service because a proxy is blocking connections from MSOIDSVC.exe
Article ID: 2618060 - View products that this article applies to.
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You can't connect to the Microsoft Lync Online service when you're using Microsoft Lync 2010. When you view Network Monitor, traces show multiple TCP SYNC requests for login.microsoftonline.com.
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To resolve this issue for Microsoft Forefront Threat Management Gateway (TMG), create an application entry for Msoidsvc.exe. To do this, follow these steps:
This issue occurs when the Microsoft Online Services Sign In Assistant traffic doesn't go through the TMG firewall client, and a direct connection is attempted.
For example, this issue may occur in a scenario where all the following conditions are true:
Still need help? Go to the Office 365 Community
Article ID: 2618060 - Last Review: May 15, 2013 - Revision: 11.0