-->![Lync Lync](/uploads/1/2/6/7/126716959/716556540.jpg)
![Lync Lync](https://khdh.handmadematters.store/pics/5143fee81d79cf89e21716c80652c4f9.jpg)
Problem
Lync 2010 Client
When you try to sign in to Skype for Business Online (formerly Lync Online) by using Lync 2010, you receive the following message:
![Lync Lync](/uploads/1/2/6/7/126716959/716556540.jpg)
To sign in, additional software is required.
Lync for Mac 2011 is the new rich client for Lync users on the Mac platform and offers integrated functionality for instant messaging, presence, conferencing and voice. Lync for Mac is designed to work with both Lync Server 2010 and Lync Online to help you: Control communication costs. Improve user productivity. Download skype 7.56 for mac. Gain operational efficiencies. Lync Phone Edition clients on Download Center; Lync Basic 2013 Trial Software; Lync for Mac 2011 client updates; Lync 2010 client updates. Lync 2010 Attendant updates; Lync 2010 Attendee updates; Skype for Business Server updates which contains the sections: Skype for Business Server 2019 update history; Skype for Business Server 2015 update. Sky is a free client for Lync 2013, Lync 2010, Skype for Business, 365. Voice calls, conference calls, meetings, chat, group chat, persistent chat rooms. More reliable, more stable, more user friendly than standard MS Lync for Mac 2011. Focused on the basic functions most people use at work. Microsoft office lync 2010 free download - Lync 2010, Microsoft Teams for Windows 10, Microsoft Lync 2010 (64-Bit), and many more programs. Canon pixma mp282 driver download mac.
Download Lync 2013 Client
When you click Download and install now?, you're prompted to download and install the Microsoft Online Services Sign-In Assistant.
Solution
![Lync Lync](https://khdh.handmadematters.store/pics/5143fee81d79cf89e21716c80652c4f9.jpg)
To work around this issue, install the Microsoft Online Services Sign-In Assistant, restart your computer, and then try to sign in to Skype for Business Online by using Lync 2010. https://imbrown810.weebly.com/blog/mac-wont-let-me-download-tableau. To install the Microsoft Online Services Sign-In Assistant, see Microsoft Online Services Sign-In Assistant for IT Professionals RTW. https://imbrown810.weebly.com/blog/kickass-torrent-for-mac-free-download.
More Information
This issue occurs if you try to sign in to Skype for Business 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 Microsoft Community.