New
#1
Open Task Manager.
In the Processes tab look for the volume mixer app.
Kill it by right-clicking it and selecting End Task.
Bump, It keeps coming back, 20-30 minutes after switching on.
Please note that thread bumping is prohibited in forum rules which you can read from links at the top.
Reddit - techsupport - Volume mixer stuck on screen
sounds similar (no solution offered).
a. Identify the process (maybe you have). You can download e.g. Winspy (free) and drag its target over the mixer.
b. Process of elimination to find origin.
Perform a clean boot (google or tutorial if unsure how), log in, wait 'long enough' to see if it appears.
I searched for this
volume mixer mix voice "windows 10"
and clicked Images, found a matching one...
Actually this appears to be from Xbox Gamebar
https://answers.microsoft.com/en-us/...6-a80c7a89697a
Thank you. Using Winspy to identify it as Xbox Game Bar allowed me to close it properly.