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All the above mentioned drivers are not working.
"This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)"
This is the error code. Sony update not working neither the windows update.
Go to Solution.
Download and re-install the WAN Driver by using the exact model # of your computer here to troubleshoot the issue: http://esupport.sony.com/
You can get back with the exact model # of your computer for the further assistance.
Note: If my post answers your question, please mark it as an "Accepted Solution."
same problem and I can't even locate the right driver!