3.6 Agent Update Fails on the Device with an Error Code

When you deploy an update on the managed device, the Agent Update checks for the availability of the Windows installer service, before making any change to the device.

If installation of other MSIs, not related to Endpoint Management, is in progress and the Agent Update installation begins, the update of subsequent Endpoint Management MSIs fails.The Windows installer displays the following error with the error code 1618:

ERROR_INSTALL_ALREADY_RUNNING

You need to redeploy the update on the managed device to successfully update the Endpoint Management MSIs.