Brymen 869s with BU86X does not connect under Win11

[Harm314]

Hi, I have a Brymen 869s + BU86x (bought together in jan-2017), that work reliably under Win 10 on two different computers (an aging self-built desktop built around an i7-2600K, and an ancient Acer Aspire 1810tz).

However, on two different Win11 laptops this combination will not run (with a one-time exception, below).

The main (test) Win11 laptop is a HP Elitebook G7- i5 with Win11 Pro. As alternative I tried my wife's Surface Pro 7.

The datacable shows up with VID 0820 and PID 0001 in Device Manager, and identifies under devices --> other devices as 'Superior DMM'.

Note: I see two device IDs:
USB\VID_0820&PID_0001&REV_8603
USB\VID_0820&PID_0001

In the Brymen Bs86x software (downloaded from the site, version  6.0.0.3s) I get error [E9015] USB Data Cable not found.

I have also tried Test Controller. It seems to find the cable but fails to communicate with it (Test Controller works on a Win10 computer with this hardware). From the debug mode:

;; HIDv0820p0001-81727: Found usb device: \\?\hid#vid_0820&pid_0001#6&27b953b7&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
;; HIDv0820p0001-81727: Comm failed
;; HIDv0820p0001-81727: RxHID:
;; Stopping thread for: HIDv0820p0001-81727 - Brymen BM869s

Other things I tried:
- run as admin (I normally run in a user account)
- set compatibility mode (to Win7)
- switch off 'Allow the computer to switch off this device to save power'

One-time exception: Earlier tonight the Brymen software was able to connect one time in the Brymen Bs86x software. After I took out and reconnected the USB plug I was no longer able to connect, also not after a restart.

I've already gotten feedback on a Dutch forum that this combination works for other people under Win11.

I'm not much of a Windows troubleshooter, and out of options. Help very much appreciated.

[coromonadalix]

some talk there 

https://www.eevblog.com/forum/testgear/logging-data-using-brymen-bm867s-with-sigrok-on-windows-10-(bu-86x-usb-cable)/

[Harm314]

Thanks for the link.

The plot thickens: With Sigrok (version 0.7.2) it works (both with and without admin rights).

Any thoughts?

[KungFuJosh]

Sounds like bad drivers. Try uninstalling from device manager, then reinsert to reinstall.

[Harm314]

The drivers are the standard Windows drivers for HID devices. Screenshot attached, but I don't have high hopes this will solve the issue, especially since a second Win11 PC has the same issue.

I'll try anyway over the weekend.