Description
Jamf School marks devices as inactive if they haven't checked in with Jamf School after a certain amount of time based on your organization's settings. A device may not check in to Jamf School because it is turned off, not connected to a network, or connected to a network that does not allow connection to Jamf School.
Adjusting the Days for Marking a Device Inactive
There is no way to completely turn off this feature in Jamf School, but we can adjust the time to inactive period.
In Jamf School go to Organization > Settings > General.
Under Device Management, change the Mark Device As Inactive dropdown to the desired time. 8 weeks is the longest period that can be selected.
Tracking Inactive Devices
To see which of your managed devices are inactive, you can:
receive an email from Jamf School when a device is marked inactive
create a smart group with the 'Last Connected' filter set to the same period of time as 'Mark Device as Inactive'
Viewing a Device's Status/Last Connection to Jamf School
There will be a banner show on the device's inventory record if it is inactive.
From Devices > Inventory, you can add/view the 'Last Connected' time for the device. If not showing, use the Table settings button to add this column.
Steps for Moving Devices from Inactive to Active Status
If a device is not checking in with Jamf School and/or is showing as inactive we can try the steps below for the device type.
Computers
Ensure the device has an MDM profile installed: Settings > Privacy & Security > Profiles or Settings> General > Device Management
Ensure the device is on and has a network connection.
Ensure the network configuration is not blocking MDM communication: Firewall, Ports, IP Addresses and URLs Used by Jamf School and Use Apple products on enterprise networks.
Try a different network/hotspot.
Try connecting via Ethernet.
Restart the device.
If there is an OS update available, try updating macOS.
If the device is still not checking in to Jamf School, erase and reenroll in to Jamf School: https://support.apple.com/en-us/102664
iPhones and iPads
Ensure the device has an MDM profile installed: Settings > General > VPN & Device Management
Ensure the device is on and has a network connection.
Ensure the network configuration is not blocking MDM communication: Firewall, Ports, IP Addresses and URLs Used by Jamf School and Use Apple products on enterprise networks.
Try a different network/hotspot.
Restart the device.
If the device still does not check in, it is possible the KeyChain has become locked causing the Wi-Fi password not to be transmitted to the Wi-Fi network. To unlock:
Enter the device passcode.
Switch the Airplane Mode on for the device.
Turn Airplane Mode off on the device.
Verify network connection on the device.
Open the device record in Jamf School and click Refresh.
If there is an OS update available, try updating iOS/iPadOS.
If the device is still not checking in to Jamf School, restore the device using Apple Configurator or iTunes and then re-enroll in Jamf School.