Office Communicator Mobile fails to connect

Here is a tip from a colleague of mine at Dimension Data, Sam Taylor.

When configuring Office Communicator Mobile you may well find that it will not work unless you add an allow rule to the client filter. Not sure why, but the original setting is to block version 6021, but doesn’t say it wont allow 387, so it should work, but it doesn’t basically. Anyway, here is what to do.

After CoMo installation on your mobile device you will probably receive connection error (Cannot sign in. Check you connection settings in the Server options, or contact your system administrator.) because your ClientFilter is not updated. To resolve this issue go trough following steps.

On Standard/Enterprise Pool

  • Go to your Standard or Enterprise Pool
  • Open Client Version Filter option in your pool configuration


  • Edit CPE value to: 2.0.387.* >= Allow


  • Stop and Start all started services

On Access Edge Server(s)

  • Run ClientVersionFilterConfig.exe (C:\Program Files\Common Files\Microsoft Office Communications Server 2007)
  • Edit CPE value to: 2.0.387.* >= Allow
  • Stop and Start all started services on Access Edge Server

So, I hope that gets things working, and thanks to Sam for the tip.