This is due to a Device Manager problem with networking. This is the fix from Microsoft – I’ve done it and it works:-
1. Download Subinacl from the link below and install:
2. Download Office 2010 Activation Fix Batch File
3. Go to the folder where you downloaded the batch file. Right click on the file and click â€œRun as administratorâ€. Click Yes or Continue to proceed if prompted.