Last week we reported about an incompatibility between Windows 7 and the iPhone.  It looks like a work-around has been found to prevent iPhone users from getting the dreaded “unknown error” while trying to synch their phones in iTunes.

The error message (unknown error (0xE8000065) occurred most often when:

• Running Windows 64bit
• Using an Intel P55 chipset
• Using an onboard USB controller (add-on PCI controllers seem to be immune)
• Running iTunes 9.x
• Trying to synch an iPhone or iPod Touch

It looks like the work-around for this is to disable USB power management, which can be done by:

• Click Start, type “Device Manager” (without the quotes) in the search box, then press enter.
• In the device manager screen, click View > Devices By Type – it’s probably already set to this view, but just in case.
• Next, expand the Universal Serial Bus Controllers section by clicking on the drop-down arrow to the left of the name.
• Finally,  right-click each USB Root Hub entry in turn, select Properties > Power Management, and uncheck the box that says “Allow the computer to turn off this device to save power”.

Restart your computer, and then try to resynch your phone.  It may not work for everyone, but it’s rumored that it is working. An official fix will likely be coming out soon from Apple and/or Intel.

Good luck, and let us know if there is something that you would like to see in future posts here on the Windows 7 help blog.

-Jason