Event ID 122 Access to Drivers on Windows Update Blocked by Policy - Fix Here
Access to drivers on Windows Update was blocked by policy
EventID:122 errors appearing on Windows Server 2012 Hyper-V host. “Device Setup Manager” service.
There is a scheduled task that runs each night in “Microsoft | Windows | Device Setup” called “Metadata Refresh”. When that task runs it causes the “Device Setup Manager” service to start, and that’s what is causing the messages.
If you look in the Event Viewer under “Application and Services Logs | Microsoft | Windows | DeviceSetupManager | Admin” and filter on Event ID 122 then you can see the entries.
Use the search in the Control Panel window and look for “device installation”
When that window opens, you will see the settings that define the “policy”
If you change the setting to “Always install the best driver software from Windows Update.” then the Event ID 122 errors will go away.
If you *also* select the “Automatically get the device app and info provided by your manufacturer” then the whole setting will change itself to the first “Yes, do this automatically” option (so the first option is the same as selecting both the bottom ones)