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HP Controllers visible but won't connect via USB 4.O dongle

I have read all the available support documentation found at https://docs.microsoft.com/en-us/windows/mixed-reality/enthusiast-guide/troubleshooting-windows-mixed-reality#motion-controllers and on many other sites. I cannot get the controllers to connect. I am using a proper USB port for the dongle. The controllers show up under bluetooth & other devices > add a device, but then after 45 seconds of trying to pair, the controller vibrates three times, and I get a "couldn't connect. try connecting again." message. Yes, I tried connecting again, restarting the computer, etc etc. Tried all the trouleshooting techniques I can think of and still nothing. Please help!


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