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google / web-serial-polyfill

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NetworkError: Failed to execute 'claimInterface' on 'USBDevice': Unable to claim interface. #60

Open RushikeshPatange opened 5 months ago

RushikeshPatange commented 5 months ago

Issue Description

I encountered an error while trying to connect the device using polyfill API on Google Chrome Lab Serial Terminal. The error message is as follows:

NetworkError: Failed to execute 'claimInterface' on 'USBDevice': Unable to claim interface.

Expected Behavior

Device should connect without any error

Actual Behavior

Getting described error

Environment

Attachments

Please find the attached video

https://github.com/google/web-serial-polyfill/assets/90703337/e487331d-3771-456d-bf61-dc35a09b91e4

Any help to resolve this issue would be greatly appreciated. Thank you!

reillyeon commented 5 months ago

Chrome can't claim an interface if the OS won't let it, such as if there is another driver or application that is already using it. You'll see a lower-level error in chrome://device-log.

RushikeshPatange commented 5 months ago

Chrome can't claim an interface if the OS won't let it, such as if there is another driver or application that is already using it. You'll see a lower-level error in chrome://device-log.

Hi @reillyeon,

Thank you for your response.

I checked chrome://device-log and found the following error log:

Device Log Error

Despite reviewing this, I'm still encountering the issue. Could you please provide further assistance on how to resolve this?

Thanks in advance !

reillyeon commented 5 months ago

This message confirms that macOS is not allowing Chrome to claim the interface. You may be able to resolve this by manually unloading a driver with kextunload, exiting whatever program is already using the interface, or using the Web Serial API (not the WebUSB-based polyfill) to connect to the device through the existing driver.

buckett commented 2 weeks ago

I'm also seeing this issue (with the same error in the device-log). I had previously opened the serial terminal with the native web serial implementation and this was working fine. Closing Chrome and then navigating to the polyfill implementation of the Web Serial still resulted in the same error (so it doesn't seem to be Chrome holding the USB device?).