Veeam Plug-In for Microsoft Azure Appliance Service Fails to Start After .NET Update with "System.IO.IOException: The system cannot open the device or file specified" Error

Challenge After installing pending operating system updates on the Veeam Plug-In for Microsoft Azure appliance, the update process fails during finalization and the appliance web UI becomes unavailable. The Veeam Azure Backup service starts and then stops with exit code 255, and the following err...