If you can't use webcam due to 'It looks like another app is using the camera already' error (0xA00F4243/0xC00D3704) in Windows 10, fix is here.

If you frequently use the Camera app or webcam using different apps on your Windows 10, this article may interest you. Actually if the camera is being used by any process or app, another app is blocked to use webcam.

Under such a condition if you try to use webcam, you get this message:

Close other apps

It looks like another app is using the camera already.

If you need it, here’s the error code:
0xA00F4243<CameraReservedByAnotherApp> (0xC00D3704)

FIX It Looks Like Another App Is Using The Camera Already In Windows 10

As you can see in the above message, there is no mentioned of which another app is using the webcam. However, if its an app, you can identify it using Task Manager and use End task button to suppress the error. But in case if a process is using webcam, it would be difficult to identify it and thus this error message can’t be solved.

But no need to worry, because good thing is that you can use Process Explorer to identify the process and kill it. Here’s how:

FIX: ‘It Looks Like Another App Is Using The Camera Already’ In Windows 10

1. Press W8K + R and type devmgmt.msc in the Run, hit Enter key to open Device Manager snap-in.

Device Manager Windows 10

2. In the Device Manager window, expand Cameras or Imaging Devices and double click camera your system currently using. On the property sheet, switch to Details tab. Now from Property drop down, select Physical Device Object name and copy the corresponding Value data.

FIX It Looks Like Another App Is Using The Camera Already In Windows 10

3. Download Process Explorer from this Microsoft documentation page. The download will be a zip file, so extract it using File Explorer or any decompression software you use. Run the procexp file to start Process Explorer.

4. Click Find and select Handle or DLL substring. Type the value we obtained in step 2 and click Search. In few seconds you’ll be able to spot the apps or processes using camera.

FIX It Looks Like Another App Is Using The Camera Already In Windows 10

5. Select those processes and click Process > Kill Process or you can directly press Delete key to terminate the selected process.

FIX It Looks Like Another App Is Using The Camera Already In Windows 10

6. Finally, in the confirmation prompt, select OK to kill the process. Kill each of the process you get in the search results. Once done, close Process Explorer.

FIX It Looks Like Another App Is Using The Camera Already In Windows 10

You can now use the Camera app without any error.

Hope this helps!

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  • Thank you. This was very helpful. It did not resolve my issue, there was 0 processing using it. It is a wrong error display, there are no processes using the camera.

  • Kapil Arya

    ^^ Thanks for your feedback!

  • There apear to be LOTS ofpeople with this problem, and lots of techy people offering technobabble solutions. Why are Microsoft not sorting this out/posting a working solution? I guess the answer is “Because they are Microsoft”

  • Kapil Arya

    ^^ Please use Feedback hub app to submit your opinion to Microsoft.

  • sadly it didnt’ work; I see hundreds of posts with this problem. Nothing is blocking the camera. its a glitch in windows 10. I’ve contacted microsoft but they have done nothing

  • This is the only thing that fixed my error. I literally tried a 1000 things. Even computer experts couldn’t solve it. But this did. Tysm

  • Kapil Arya

    ^^ Glad to help 😎

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