Can an OBS logo image appear on my Zoom profile picture even if OBS is uninstalled?

[chikostar]

Hello, I’d like to ask about a strange situation that happened during a Zoom class.

During a one-on-one Zoom session, the instructor said that my Zoom profile picture displayed an “OBS” logo image, even though I was not using or recording with OBS Studio at that time.
This caused a misunderstanding that I was recording the class.

However:

• OBS Studio was not installed or running on my computer at the time of the class.
• I had used OBS Studio a few years ago (around the COVID-19 period) to record casual online meetings,
  but it was uninstalled long ago and has not been reinstalled since.
• The “OBS” logo appeared only on my PC Zoom account’s profile picture, not on my iPad (which was logged into the same account).

So, I’d like to ask a few technical questions from the OBS side:

1. Could any leftover components from a previous OBS installation (such as the virtual camera driver, cached image files, or registry entries)
   cause another application (like Zoom) to mistakenly display the OBS logo image as a user’s profile picture?
2. If “OBS Virtual Camera” or related drivers remain registered in the system,
   is there any situation where Zoom might automatically link or pull the OBS logo image
   from those remnants, even if OBS is uninstalled?
3. Does OBS ever create or register any identifiable “OBS logo” asset or metadata in the system
   that another app could access or display unintentionally?

This misunderstanding has become a serious issue, so I’d really appreciate your technical confirmation
about whether OBS or its leftover files could make another program (like Zoom) show an OBS logo image
as a participant’s profile picture.

Thank you very much for your time and assistance.

 

[koala]

The virtual camera with the OBS image can be a leftover of a previous OBS installation. If the camera is inactive, it shows the static OBS image. There is a batch file "C:\Program Files\obs-studio\data\obs-plugins\win-dshow\virtualcam-uninstall.bat" that will unregister the OBS webcam (run as administrator).

Virtual Camera Troubleshooting | OBS

OBS Knowledge Base. Install, remove, or fix issues with the virtual camera

obsproject.com

If this file isn't available any more because OBS is uninstalled, this is the content. Save and run as administrator.
It's actually just 2 commands:
regsvr32.exe /u /s obs-virtualcam-module32.dll
regsvr32.exe /u /s obs-virtualcam-module64.dll

@echo off
@cd /d "%~dp0"
goto checkAdmin

:checkAdmin
    net session >nul 2>&1
    if %errorLevel% == 0 (
        echo.
    ) else (
        echo Administrative rights are required, please re-run this script as Administrator.
        goto end
    )

:uninstallDLLs
    if exist "%~dp0\data\obs-plugins\win-dshow\obs-virtualcam-module32.dll" (
        regsvr32.exe /u /s "%~dp0\data\obs-plugins\win-dshow\obs-virtualcam-module32.dll"
    ) else (
        regsvr32.exe /u /s obs-virtualcam-module32.dll
    )
    if exist "%~dp0\data\obs-plugins\win-dshow\obs-virtualcam-module64.dll" (
        regsvr32.exe /u /s "%~dp0\data\obs-plugins\win-dshow\obs-virtualcam-module64.dll"
    ) else (
        regsvr32.exe /u /s obs-virtualcam-module64.dll
    )

:endSuccess
    echo Virtual Cam uninstalled!
    echo.

:end
    pause
    exit