This should work. Which OS are you using?

This should work. Which OS are you using?

OS is Windows 10 21H2, and the scanner is honeywell 7580g

It looks like 7580g is a barcode scanner: Genesis 7580g Hands-Free Scanner

I don't have any barcode scanners so I tested with a USB headset (Jabra Engage) on Windows 10 21H2 and was able to receive input report events on two separate domains. Barcode scanners have special support in Windows 8.1 and later with hidscanner.dll which I suppose could be interfering:

https://docs.microsoft.com/en-us/windows-hardware/drivers/hid/hid-architecture#hid-clients-supported-in-windows

The documentation says access mode is Shared so I wouldn't expect any issues with multiple clients accessing the same input reports. Maybe there's a hidscanner.dll bug where it doesn't work properly when there are multiple clients from the same application?

For other (probably unrelated) issues, users have reported success changing the driver from hidscanner.dll to hidclass.sys. Could you try that and see if it changes the WebHID behavior?

It looks like 7580g is a barcode scanner: Genesis 7580g Hands-Free Scanner

I don't have any barcode scanners so I tested with a USB headset (Jabra Engage) on Windows 10 21H2 and was able to receive input report events on two separate domains. Barcode scanners have special support in Windows 8.1 and later with hidscanner.dll which I suppose could be interfering:

https://docs.microsoft.com/en-us/windows-hardware/drivers/hid/hid-architecture#hid-clients-supported-in-windows

The documentation says access mode is Shared so I wouldn't expect any issues with multiple clients accessing the same input reports. Maybe there's a hidscanner.dll bug where it doesn't work properly when there are multiple clients from the same application?

For other (probably unrelated) issues, users have reported success changing the driver from hidscanner.dll to hidclass.sys. Could you try that and see if it changes the WebHID behavior?

Oh! you're right.

After I changed the driver to hidclass.sys the problem was solved.

Thank you so much!