User-Agent: UCCAPI/.0 OC/.0 (Microsoft Office Communicator 2007 R2)Ĭall-ID: D8E1g8966a0C44i014Cm36F4t5BE8b4428xC0A3xĬontact: methods='INVITE, MESSAGE, INFO, SUBSCRIBE, OPTIONS, BYE, CANCEL, NOTIFY, ACK, REFER, BENOTIFY' proxy=replace +sip.instance='' I have tried both DOMAIN\username and I'm out of ideas. I have followed the steps provided here : īut I keep getting 'Authentication failed' on the windows pidgin client and on the Linux one 'Wrong Password' I have retyped the password, copied and pasted it the password is definitely correct. We are trialing Microsoft Online, and want to make use of Lync, Most of our users are on Linux, which is how I got here.