Sign up for Office 365
Learn more about Office 365
I have been suffering from this for 10 months. Msft support was useless for this issue. It affects Outlook as well. (See Outlook losing connection to Exchange in Outlook forum. I got past the Outlook issues by using the web-ui version of outlook)
Lync has been constantly disconnecting and reconnecting. Every 5 to 8 minutes, all day, everyday.
If you have this issue and you use a D-Link router, this may be your solution!
Go to superuser.com/.../why-does-my-d-link-router-keeps-dropping-my-outlook-and-lync-connection
It really does seem to do the trick.
The solution involves making D-Link router setting changes. It fixes the problem for me. A real relief.