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Author Topic: EFW2 Connection Failure: Unknown USB device (Device Descriptor Request Failed)  (Read 1914 times)

jlmanatee

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  • Posts: 3
This is on Windows 10 pro.  I've tried swapping usb cables, installing/unistalling drivers, a different Windows 10 PC.  Just not getting any love.  It all worked fine last fall.  Did a recent Windows 10 update hose me?  :'(  The driver events read like there's some kind of conflict between driver versions:

Device USB\VID_0000&PID_0002\5&3871e74e&0&1 was not migrated due to partial or ambiguous match.

Last Device Instance Id: USB\VID_045E&PID_07B2\5&7f9be32&0&3
Class Guid: {36FC9E60-C465-11CF-8056-444553540000}
Location Path:
Migration Rank: 0xF000FFFFFFFFF122
Present: false
Status: 0xC0000719

jlmanatee

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  • Posts: 3
I've tried connecting the filter wheel to 4 different PCs and see the same error message.  All have had the core software and drivers on them.  One was an older Windows 8.1 that I had not used in over a year and it had old drivers on it that worked with the filter wheel back then.  It too had the same error message.  I'm now assuming the filter wheel's circuitry is "messed up" (can't think of a more appropriate term)  and will be sending it in for repairs.  In the meantime, I'm going to use a manual wheel.   :(