I've been busy working on another project. In the meantime I suggest that you check out NextHop which is a centralized portal for all things relating to Microsoft Unified Communications.

Yahoo! has added two additional domains (ymail.com and rocketmail.com) that users can choose from when creating a Yahoo! ID. In order for instant messaging and presence to work correctly with Yahoo! user accounts created in those domains you will need...

The following symptoms are observed.  Response Group Service doesn’t start.  When starting manually it stops again as soon as it has been started. The following event is logged in the Office Communications Server event log in Event Viewer on...

When you deploy a new installation of Standard Edition Server activation fails if security update 974571 is installed and the fix mentioned in http://support.microsoft.com/kb/974571 has not been applied to the server. The following is logged in the Office...

Problem After migrating a user from Live Communications Server 2005 Service Pack 1 to Office Communications Server 2007 R2 you are unable to view or change the user’s Communications Tab properties.  Symptoms When you click one of the configure buttons...

Problem You receive an error trying to issue a certificate via the Certificate Wizard because the default web server template has been disabled on the certification authority. Symptom You may see the following error in the Certificate Authority Server...

Cause LCS 2005 SP1 Servers have been updated with KB 911996 which requires any LCS 2005 SP1 Administration Tools installation to also be updated. Resolution Apply KB 911996 update to machines that have the LCS 2005 SP1 Administration Tools Installation...

When you launch the OCS 2007 BPA Tool for the first time after installation you have the option to set the tool to “Check for updates on startup (recommended)” or to “Do not check for updates on startup”. Once you have selected an option then the following...

I had worked on a case recently where a firewall existed between the OCS 2007 R2 Pool and the internal Communicator 2007 R2 clients concerning call flow and what direct ports needed to be open in the firewall (inbound, outbound, or both) using the Communicator...

Communicator 2007 or Communicator 2007 R2 File transfers no longer occur peer-to-peer after installation of Forefront Security for Office Communications Server 2007. By default, IM-based file transfers occur as a peer-to-peer file copy between two instances...

Problem:  A WMI instance for a policy could not be located Symptom: Follow event is logged in Event Viewer Event ID 32060 User Services - A WMI instance for a policy could not be located.; <FrontEndServername> A WMI instance for a policy could...

Problem: You logon to The Dial-in Conferencing Settings page ( https://<cwaserverwebsitefqdn >/dialin) powered by Communicator Web Access 2007 R2 and Sign in and the Personal Identification Number information as shown by the Assigned Conference...

Problem: Click Meet Now button in Live Meeting 2007 Note: Clicking Meet Now on Communication 2007 R2 menu works. Symptoms: The following can be found in the pwconsole-debug.txt log from the %temp% directory. [MC] 18:32:06:657 GMT [PID 3548] [THREAD 3264...

Problem: Communicator Phone Edition (CPE) device signs in and shows Authentication completed. Retrieving information. CPE device reboots but never gets and apply the update. In the IIS logs on the Front Ends you see the POST Request but no GET. Environment...

If you are planning to have external CWA users that will initiate desktop sharing you must configure a CWA external virtual server and OCS Access Edge Server to include the A/V Edge Server role.  Reason is that an internal virtual server will not...

Problem: Installing Office Communications Server 2007 R2 Attendant Console breaks presence in Outlook Symptoms: The check boxes to allow presence integration in Attendant Console are grayed out. Cause: Attendant Console sets default...

Here are some troubleshooting steps for when you expand a group distribution list in Communicator and you receive a message "Cannot perform this action, and the cause is unknown. Contact your system administrator to investigate this problem." First...

The Global Settings Migration Tool enables Administrators of existing OCS 2007 deployments to migrate the OCS related global settings residing in Active Directory, from the root domain’s System container to the Configuration container. The migration...

There are several knowledge base articles that have been published that address various causes and resolutions for the "Cannot Synchronize Address Book" issue in Microsoft Office Communicator 2007 including R2. After trying those with no resolution...

Problem: Internal clients are able to download content of handouts that are shared and for some meetings external clients are able to download and view handouts but other times they are not and receive the error "Content failed to download due to a...

Problem: Issue is that when a Communicator client sends a message to a Yahoo! Messenger client that is at a version less than 8.1.0421 the Communicator client does not receive notice that the message was not delivered in real time and does not see...