Lync 2013 Connectivity Problems

Question

We have one computer that will not let anyone sign into Lync 2013. We have re-installed Lync, repaired Lync, tried using the manual configuration with the lync servers, compared registry settings from a machine that does work, compared certificates to
machine that works, and looked at network settings on the computer with no luck. When you attempt to login, you enter your email address which is <[email protected] and then get prompted for a password. Once you enter your password, you just see the
message "Connecting to server and signing in." This will just sit here to many many minutes and not ever do anything. We are using Office 365, Office 2013, and using a hosted exchange environment with dirsync with password sync. Can anyone help with
this issue? It is definitely something local to this computer because the user can login to Lync on other computers. Thanks.

Answer 1

Get sign in automatic configuration and download lync from office 365 portal
Then try again to sign in if still have problem try to use the following
For Problem acquiring a personal certificate that is required to sign in If the user’s sign address has recently changed, they may need to delete cached sign-in data. Ask users to run the automated
Fix it wizard in
Microsoft Knowledge Base article 2698626.
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