You can update your drivers automatically with either the FREE or the Pro version of Driver Easy.
After updating your Windows 10 PC through the Windows update, you may no longer be able to scan using the network connection.
Flat Rate Repair Fee Table How do I send my unit in for repair?
Updating network printer
Upon reconnecting, the clients will check the driver version as part of the process and download the latest drivers.
If your product needs repair, Primera’s depot repair facility in the USA will be pleased to repair it.
My guess would be that's why you can't update the drivers on most workstations, and "some" of the workstations aren't getting the new GPO applied - those ones are the one on which you can edit the settings/update the drivers.
Correct it by correcting your GPO, rather than screwing around on each individual machine...
If your product is Out of Warranty we can repair it on a flat fee basis.