Re-Register WMDM if Zune Software Cannot Detect Your Zune
Contributed by Rob Rogers 
Tagged: Zune If the Zune software cannot detect your Zune and you’ve done the obvious (disconnect and reconnect the device, reset the device, and restart your Zune software) then you might need to re-register the Windows Media Device Manager. To do this . . .
1. Disconnect your Zune device and close the Zune software.
2. Click Start and select Run.
3. Type regsvr32 “C:\Program Files\Zune\zunesp.dll”.
4. Click OK.
You should then see a message reading: DllRegisterServer in C:\Program Files\Zune\zunesp.dll succeeded.. Click OK start your Zune software and connect the device.
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Goddamnit said on December 7, 2008
I did this, but the zunesp.dll is not found. Please help me, I think this is an underlying issue for some other problems on my PC.
Katlan said on July 2, 2009
I did this. It succeeded. But, my zune software still doesn’t read the hardware. Any advice?
Katlan said on July 2, 2009
The weird thing is: when I plug my zune into the usb, the zune software pops up automatically BUT still no sign of the zune hardware connected to zune software. I’ve tried everything and I will die if I have to lose all my music since my original computer crashed. I always sign onto my new comp as a guest because this comp is going to be temporary.