Windows 7/vista 64-bit ?Unable to find signed driver

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    Question: When binding my device to CyUSB.sys in Windows 7/Vista 64-bit environment I get the following error ?Windows encountered a problem installing the driver software for your device?. What does this error mean? How can it be resolved?

     

    Answer:

     

    CyUSB.sys downloaded through our website is an unsigned driver. Using it in 64-bit operating system without disabling driver signature enforcement is a possible reason for this problem.

    Following are the steps to disable driver signature enforcement in 64-bit operating system

    1.       During boot-up press F8.

    2.       In the list of options that appear select “Disable driver signature enforcement”.

    Find KB article Why is CyUSB.sys not WHQL signed?for details on why a signed driver is not provided.

    Find Application note Windows Hardware Quality Lab signing procedure for details on driver signing procedure.