Hello!
Pulling my hair out over here. (What's left of it anyway) We are (slowly) migrating our users to O365 and Lync. Some users are able to log into Lync with no problem at all, and some are getting the message "Cannot sign in because the server is temporarily unavailable". I am able to sign in on my desktop, but not on my laptop. I have tried manually configuring Lync to use sipdir.online.lync.com:443 and that does not work. I have uninstalled and reinstalled Lync several times, tried resetting registry permissions, tried off of our network to rule out a firewall issue, etc. It almost seems like there is some policy, file, or registry setting that is preventing Lync from even reaching out, but I can't seem to find any such setting.
Anyone have any ideas? This one has me stumped.
Thanks,
Christian