Currently using 365 Apps Cloud update - not all devices showing in Inventory

Inventory in the Microsoft 365 Apps admin center is driven by device heartbeats and Cloud Update eligibility; there is no manual “add device” or on-demand rescan capability.

Key points and checks:

1. Heartbeat behavior and cleanup
   • Devices send a heartbeat once per day to inventory.
   • If a device does not send a heartbeat for 30 days (or the longer value configured in Settings), it is removed from inventory. When it comes back online and sends a heartbeat again, it is re-added.
   • Ensure missing devices are online and able to send heartbeats, then allow time for them to appear.
2. Requirements and missing devices
   • If devices are missing, verify that they meet the requirements for using inventory (for example, supported Microsoft 365 Apps versions and channels, connectivity to the service). If requirements are not met, the device will not appear.
   • Some duplication can occur (mainly non-persistent VDI), but duplicates are cleaned up automatically each day.
3. Cloud Update scope and channels
   • Cloud Update only manages devices on Monthly Enterprise Channel or Current Channel. Devices on other channels will not be Cloud Update–managed, though they may still appear in inventory if they meet inventory requirements.
   • In inventory, use the Cloud Update Status column to confirm whether devices are onboarding, managed, or excluded. Devices in exclusion groups will show as excluded and will not be Cloud Update–managed.
4. No manual add or rescan
   • Inventory does not support alternative methods for data import or manual device addition.
   • There is no “rescan environment” action; devices appear when they provision themselves into inventory and start sending heartbeats.
5. What can be done now
   • Confirm that missing devices:
     • Have Microsoft 365 Apps installed at version 2008 or later and are configured for supported update channels if Cloud Update management is expected.
     • Meet all inventory prerequisites and can reach the Microsoft 365 Apps admin center endpoints.
   • Wait for at least one full heartbeat cycle (24 hours) after confirming prerequisites.
   • Use the Inventory → Show All Devices view and the Cloud Update Status column to monitor onboarding and management status.
   • If devices still do not appear after requirements are verified and sufficient time has passed, collect one or more affected Device IDs (from any that do appear) and open a support ticket as described in the Cloud Update troubleshooting guidance.

References:

• Roadmap to modern management of Microsoft 365 Apps in the enterprise
• Overview of inventory in the Microsoft 365 Apps admin center
• Enabling and configuring Cloud Update
• Overview of cloud update in the Microsoft 365 Apps admin center