Friday, 26 August 2011

Lync Online: Cannot sign in because the server is incompatible with Microsoft Lync 2010

When for the first time you try to login to Lync Online after a fresh install using your Office 365 user account, you may get this error:
One of the most likely reason for this error could be in the case that you have been a BPOS customer and you still have Microsoft Sign In Application installed on your PC/laptop. 
In this case, Lync probably has picked up the OCS server information from the Sign In application which means the Internal and External server names are pointing to BPOS.  You can check this by going to Lync Options:

and in the Personal pane click the Advanced button next to Sign-in address field:

If the connection setting is set to Manual, it is more likely pointing to which is the address of the Office Communication Server on BPOS.
you need to change the Internal and External server names to point to Lync Online on Office 365 which is

save the changes and exit the Lync Options.
Now you will need to restart Lync client. Once Lync is restarted, you should be able to log in using your Office 365 credentials without any errors.

1 comment:

  1. salam jenabe tavakoli. man lync server ro nasb kardam ama tuy connect shodan be server moshkel daram. emkanesh hast ke behatun mokatebe dashte basham bara hale moshkelam komakam konid?