(Code 31) can't load bluetooth audio drivers. - Microsoft …
https://answers.microsoft.com/en-us/windows/forum/all/code-31-cant-load-bluetooth-audio-drivers/c76dea48-5dc1-4d2c-b1c2-7b970eb178d4
WEBApr 28, 2016 · Error code 31 means that the device is not working properly because Windows cannot load the drivers required for this device. In the device's Properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard. Follow the instructions to update the driver.
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