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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PROBLEM

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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SOLUTION

To resolve this issue for Microsoft Forefront Threat Management Gateway (TMG), create an application entry for Msoidsvc.exe. To do this, follow these steps:
  1. In the left pane, click Networking.
  2. Click the Network tab. Under the Tasks tab in the right pane, click Configure Forefront TMG Client Settings.
  3. In the Forefront TMG Client Settings dialog box, click New.
  4. In the Application Entry Setting dialog box, configure the following rules:

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    ApplicationKeyValue
    msoidsvcDisable0
    msoidsvcDisableEx0
Note The same application settings can be applied to other firewalls. Additionally, your firewall server may require a firewall client to be installed on the end-user's computer.
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MORE INFORMATION

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:
  • Proxy Server Automatic Discovery isn't enabled.
  • A proxy server isn't configured in Internet Explorer.
  • The Automatically detect settings option isn't enabled in Internet Explorer.
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Still need help? Go to the Office 365 Community
(http://community.office365.com/)
website.
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Properties

Article ID: 2618060 - Last Review: May 15, 2013 - Revision: 11.0
Applies to
  • Microsoft Office 365 for enterprises (pre-upgrade)
  • Microsoft Office 365 for small businesses  (pre-upgrade)
  • Microsoft Office 365 for education  (pre-upgrade)
  • Microsoft Lync Online
  • Microsoft Lync 2010
Keywords: 
o365 o365a o365e o365p kbgraphxlink o365m o365062011 pre-upgrade o365022013 after upgrade KB2618060
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