Step-by-Step Setup: Microsoft Office Communications Server 2007 R2 Group Chat Administration Tool

Troubleshooting & Admin Tips — MOSC 2007 R2 Group Chat Administration Tool

Quick checklist

• Confirm versions/updates: Ensure Group Chat Admin Tool and servers have the latest cumulative updates (QFE packages such as June/Sep 2011 and Jan 2012 updates for MgcAdmin/MgcServer).
• Run as admin: On Windows Server 2008 with UAC enabled, launch the MGCAdmin.msp installer or Admin Tool elevated (Run as administrator).
• Service state: Verify Group Chat services (Channel, Lookup, Compliance) are running on servers and restart in correct order (stop Channel/Lookup before upgrades; restart Channel → Lookup → Compliance).

Common problems and fixes

• Cannot sign in to Admin Tool

  • Apply the June 2011 cumulative update; confirm server domain compatibility (Windows Server 2008 R2 domain scenarios fixed in hotfixes).
  • Check service accounts, SPNs, and AD permissions for Group Chat service accounts.

• “Unable to get eligible principals: Operation failure” when searching users

  • Symptom: LDAP searches time out (especially with nested or very large distribution lists).
  • Fix: Install January 2012 cumulative update that increases LDAP search timeout (from 15s to 120s), or reduce DL nesting/size.

• Errors adding users to chat rooms / role list issues

  • Apply the September 2011 (and earlier) updates that fix role-list add errors and various add-user failures.
  • Verify AD replication and that user objects are reachable by the Group Chat servers.

• You cannot scroll/move channels between categories or UI shows wrong dialog titles

  • Install the appropriate MgcAdmin cumulative update (patches fixed UI/time-out/title issues).

• Group Chat service starts then stops

  • Apply the hotfixes referenced in KBs (e.g., after earlier QFE installs). Check Event Viewer for specific errors, then confirm file versions match patched binaries (see update file lists).

• Compliance/export problems (missing JOIN/PART events or incomplete XML)

  • Ensure compliance server is patched and service account can write outputs. Confirm schema upgrades completed when installing server updates.

Upgrade & install notes

• Use the MgcAdmin.msp / MgcServer.msp packages from Microsoft Support; some cumulative updates replace prior ones—install them in sequence if needed.
• When applying on servers, stop Channel and Lookup services first. After install, run ServerConfigTool.exe to upgrade DB schema when prompted.
• On systems with UAC, install via elevated command prompt to avoid permission issues.

Diagnostics steps (ordered)

1. Check Event Viewer on Group Chat servers for errors (Channel/Lookup/Compliance).
2. Confirm service accounts and AD connectivity (ping AD, replicate status).
3. Verify installed MGC Admin/Server file versions against Microsoft update KBs.
4. Attempt targeted LDAP search via ldap tools to reproduce any timeouts.
5. Apply the latest cumulative update matching your problem and re-run ServerConfigTool if server update applied.
6. Restart services in order and re-test functionality.

Admin best practices

• Keep Group Chat Admin Tool and all Group Chat servers consistently patched to the same QFE level.
• Limit very large or deeply nested distribution lists for role membership; prefer security groups where possible.
• Monitor Event Viewer and set proactive alerts for Group Chat service failures.
• Keep backups of Group Chat configuration and database before upgrades.
• Document service account privileges and any manual registry or config changes performed during troubleshooting.

If you want, I can produce a concise upgrade checklist (step-by-step) for applying a specific cumulative update.