Sennheiser HEadphones stopped working (upgraded to Win_10: 21H2) See error "event" in Device details

[Rob_P5]

I upgraded to Win-10 21H2 (from 20H2).

Everything went well.

My headset was working, but now is not.

The headphone I have are:

SENNHEISER PC 373D - 7.1 Surround Sound Gaming Headset

I have the following on the Device Manager as Audio Inputs and Outputs:

Headset Earphone (Sennheiser Communication Audio)

Headset Microphone (Sennheiser Communication Audio)

OMEN X 27 (NVIDIA High Def Audio)

Realtek Digital Output 

Speaker/Headphone (Realek Audio)

Speakers (Sennheiser Main Audio)

I tried to reinstall the driver, but that didn't work.

I see the following events (for the device Headset listed 1st in the above list):

Device SWD\MMDEVAPI\{0.0.0.00000000}.{5d18b711-9cde-44c5-b85a-e2c9d9effe8c} was not migrated due to partial or ambiguous match.

Last Device Instance Id: SWD\MMDEVAPI\{0.0.0.00000000}.{c718ec8c-7749-472b-9305-8dfb1ec55512}
Class Guid: {c166523c-fe0c-4a94-a586-f1a80cfbbf3e}
Location Path:
Migration Rank: 0xF00000000000F120
Present: true
Status: 0xC0000719

I have external speakers as well, and those still work perfectly.

I tried disabling all the devices EXCEPT the device 1st in the list (to attempt to remove duplicate/ambiguous items for aduio), but that didn't work.

[Prométhée]

hi

did you try this :

Realtek High-Definition (HD) Audio Driver

6.0.8924.1 Rev.A

36.0 MB

Jun 16, 2020

Download

or this one

Realtek High-Definition (HD) Audio Driver

6.0.9102.1 Rev.A

38.8 MB

Feb 26, 2021

Download

[Rob_P5]

I downloaded this and ran the executable:

Realtek High-Definition (HD) Audio Driver

6.0.9102.1 Rev.A

38.8 MB

Feb 26, 2021

The external speakers still function and are the device in the list I provided as:

Speaker/Headphone (Realtek Audio)

The headset does still not.

All "audio tests fail".

As indicated the Event in the logs still notes ambiguity:

Device SWD\MMDEVAPI\{0.0.0.00000000}.{23b061c1-d7b9-4181-b4dd-a5f20be62219} was not migrated due to partial or ambiguous match.

[Prométhée · Accepted solution]

hi

unplug the headphones
unplug all peripherals, leave only keyboard, mouse, screen
turn off the computer, unplug the power plug
press the power button for more than 30 seconds
reconnect power, reboot
open device manager, check audio driver version, if up to date
try another headset, if you can!