An administrator added a group of new users to the organization. The administrator also just finished configuring the Cisco Unified IM and Presence Service with calendar integration for Microsoft…

Selecting 'Enable User for Cisco UCM IM and Presence' is required on each user account in Cisco Unified Communications Manager before the user can authenticate and log in to Cisco Jabber - without this flag, the IM and Presence Service will not accept the user's registration.

A full LDAP sync imports or refreshes user accounts from the directory but does not itself enable those accounts for IM and Presence or activate calendar presence, so syncing alone leaves the required user-level settings unconfigured.

Adding a feature group template to an LDAP sync agreement applies settings to future or re-synced LDAP users automatically, but because these users were already added, this action does not retroactively apply the IM and Presence or calendar presence settings to the existing accounts.

The 'Include meeting information in presence' check box on the user's IM and Presence profile is the specific server-side setting that enables calendar integration to publish Microsoft Exchange meeting data into the user's presence status - it must be explicitly enabled per user after the Exchange calendar integration is configured.

Client-side Outlook calendar selection in Jabber is a user preference that overrides nothing on the server; the administrator-side 'include meeting information in presence' check box (option D) is what controls whether the Presence Service federates Exchange calendar data into presence, making a client-side action an insufficient substitute.