Article ID: 2459899 - View products that this article applies to.
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PROBLEM

When you try to sign in to Lync Online by using Lync 2010, you receive the following message:

To sign in, additional software is required.
When you click Download and install now?, you're prompted to download and install the Microsoft Online Services Sign-In Assistant.

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Screen shot of Lync sign in page, including error message Download and install now? link


SOLUTION

To work around this issue, install the Microsoft Online Services Sign-In Assistant, restart your computer, and then try to sign in to Lync Online by using Lync 2010. To install the Microsoft Online Services Sign-In Assistant, go to the following Microsoft website:
Microsoft Online Services Sign-In Assistant for IT Professionals RTW

MORE INFORMATION

This issue occurs if you try to sign in to Lync Online by using Lync 2010 on an operating system that doesn't have the Microsoft Online Services Sign-In Assistant. 

Still need help? Go to the Office 365 Community website.

Properties

Article ID: 2459899 - Last Review: June 24, 2014 - Revision: 24.0
Applies to
  • Microsoft Lync Online
Keywords: 
o365 o365e o365p o365a kbgraphxlink o365022013 o365m kbgraphic KB2459899

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