Using a 3.Party IM Client with Office 365 or Lync?

Of course!

I’ve been using Pidgin for ages…

In Pidgin I’m able to run the following protocols

  • -XMPP (facebook)
  • Office Communicator (for Lync and O365)
  • Skype
  • Skype for Business
  • ICQ
  • ….. and lots more.. see the full list at Pidgin Thirdparty plugins

You should try it, if you like me prefer to keep your conversation history’s together and sorted.

One thing i’ve noticed, for some reason Office 365 (Lync or now Skype for Business) requires me to use a specific user agent(!) so….having problems getting it to work? Maybe you see:

Connection refused with error message
“You are currently not using the recommended version of the client”
“You have been rejected by the server: https://portal.microsoftonline.com/download/lync.aspx”

Cry no more!

Here is a list of user agents and versions you can emulate, and it works great! Just modify your connection profile, under advanced, type one of the following user agent values..

Version / Product User Agent values (as seen in the wild)
Lync 2013 and Office 365 UCCAPI/15.0.4481.1000 OC/15.0.4481.1000 (Microsoft Lync)
UCCAPI/15.0.4420.1017 OC/15.0.4420.1017 (Microsoft Lync)
Lync 2010 and Office 365 UCCAPI/4.0.7577.314 OC/4.0.7577.314 (Microsoft Lync 2010)
UCCAPI/4.0.7577.256 OC/4.0.7577.280 (Microsoft Lync 2010)
Office Communicator 2007 R2 UCCAPI/3.5.6907.206 OC/3.5.6907.206 (Microsoft Office Communicator 2007 R2)
UCCAPI/3.5.6907.0 OC/3.5.6907.0 (Microsoft Office Communicator 2007 R2)
Office Communicator 2007 UCCP/2.0.6362.111 OC/2.0.6362.111 (Microsoft Office Communicator)
UCCP/2.0.6362.97 OC/2.0.6362.97 (Microsoft Office Communicator)
Office Communicator 2005 LCC/1.3.5371 (Microsoft Office Communicator 2005 1.0.559.0)
LCC/1.3.5371 (Microsoft Office Communicator 2005 1.0.559.232)

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