On most systems the Digital Cable Adviser automatically generates and registers the product key needed for WMC to use an OCUR tuner.
If WMC detects the HDHomeRun Prime CableCARD tuners but prompts for a product activation key then enter the following key:
263DJ-2Y9YT-6X9G6-W28DB-697TF
WMC activation key
If the above key reports that is invalid, first verify that you have typed it correctly. If it continues to not work, close WMC, open a command prompt, and run:
You should see 2 entries, one for Windows 7, <edition> Edition, and one for Windows 7, OCUR add-on for Ultimate,HomePremium,Enterprise,Professional,ServerHomePremium. Ignore the one for regular Windows 7. If the License Status for the OCUR add-on shows as Unlicensed, open a command prompt as Administrator (Start > Programs > Accessories > right click on Command Prompt, choose Run as Administrator) and run the following:
Where <activationid> is the Activation ID listed under the OCUR add-on.
Example:
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cscript %systemroot%\system32\slmgr.vbs -dlv
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cscript %windir%\system32\slmgr.vbs /ato <activationid>
Example:
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cscript %windir%\system32\slmgr.vbs /ato 4a8149bb-7d61-49f4-8822-82c7bf88d64b