0xa00f4243 Camera Reserved by Another App: 6 Fixes to Use

Check expert solutions that work for all

by Matthew Adams
Matthew Adams
Matthew Adams
Windows & Software Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things... read more
Affiliate Disclosure
  • The camera app, though extremely simple and user-friendly, can sometimes throw the 0xa00f4243 Camera Reserved By Another App error.
  • This problem is usually due to misconfigured settings, issues with the driver, or a faulty connection.
  • To fix things, plug the webcam into another port, reinstall the camera driver, or reset the app, amongst other solutions.
fix 0xa00f4243 camera reserved by another app error in Windows

The Camera app helps capture photos and record videos with the built-in or attached webcam, though many use third-party video recorders. But several users who rely on the app reported the 0xa00f4243 Camera reserved by another app error.

The error appears when opening the Camera app, and the message reads 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). So, let’s find out all about it.

Why does it say my camera is being used by another program?

Here are a few reasons you might be getting the error:

  • Privacy settings: If the webcam’s privacy settings are misconfigured, you may get the error.
  • Corrupt system files: When the system files are corrupt, the camera might not function effectively, and even throw the Your webcam is blocked by another application error.
  • Problems with the driver: A corrupt or outdated driver is just as likely to cause this error.
  • Issues with the connection: For many users, it was an improper connection or a problem with the port that triggered the error.
  • Another app using the camera: The possibility that another app on the PC is using the camera can’t be ignored, and you will have to verify that as well.

How can I fix 0xa00f4243 Camera reserved by another app (0xc00d3704) error?

Before we start making major changes, let’s try a few quick troubleshooting tips and tricks:

  • If it’s an external webcam plugged into a USB hub, remove it and directly plug it into a USB port on the computer.
  • Terminate any applications that might be using the camera from the Task Manager.
  • Check for Windows updates and install any pending ones.
  • Disable any antivirus installed on the computer and verify whether the 0xa00f4243 Camera reserved by another app error is fixed. If yes, we recommend you switch to an effective third-party antivirus for enhanced security and a better Windows experience.

If these don’t work, head to the solutions listed next.

How we test, review and rate?

We have worked for the past 6 months on building a new review system on how we produce content. Using it, we have subsequently redone most of our articles to provide actual hands-on expertise on the guides we made.

For more details you can read how we test, review, and rate at WindowsReport.

1. Run the Hardware and Devices troubleshooter

  1. Press Windows + R to open Run, paste the following in the text field, and hit Enter:msdt.exe -id DeviceDiagnostichardware and devices troubleshooter
  2. Now, follow the on-screen instructions and make the recommended changes to complete the process.troubleshooter to fix 0xa00f4243 camera reserved by another app

To eliminate the possibility of a hardware problem triggering the 0xa00f4243 Camera reserved by another app error, you can run the Hardware and Devices troubleshooter. It will automatically identify and eliminate the issues if any are found.

2. Check the privacy settings

  1. Press Windows + I to open Settings, and click on Privacy.privacy
  2. Head to Camera from the navigation pane, and make sure the toggle for the Camera app is enabled. Also, disable the toggle for all the other apps if you don’t use them.enable to fix 0xa00f4243 camera reserved by another app

After changing the privacy settings, you should be able to get rid of the 0xA00F4243 camera reserved by another app on Lenovo and other devices.

3. Reinstall the camera driver

  1. Press Windows + R to open Run, type devmgmt.msc in the text field, and hit Enter.devmgmt.msc
  2. Expand the Cameras section, right-click on the connected webcam, and choose Uninstall device.uninstall device to fix 0xa00f4243 camera reserved by another app
  3. Click Uninstall in the confirmation prompt.uninstall
  4. Once done, restart the computer, and Windows will install a fresh copy of the driver.

You will encounter issues with the camera when its driver is corrupt. And a quick fix is to simply reinstall the device.

4. Update the camera driver

  1. Press Windows + X to open the Power User menu, and select Device Manager.device manager
  2. Locate your webcam under Cameras, right-click on it, and choose Update driver.update driver to fix 0xa00f4243 camera reserved by another app
  3. Now, select Search automatically for updated drivers.search automatically for drivers
  4. Wait for Windows to install the best available driver for the webcam.

Another solution when getting the 0xa00f4243 Camera reserved by another app error is to update the camera driver. Also, if the automatic options don’t work out, you can manually install the driver, though it’s both time-consuming and risky.

Update drivers automatically

While there is always the alternative of using Windows Update, it doesn’t always find your dedicated drivers and installs generic ones instead.

However, the software will make that operation much simpler, allowing you to identify, download, and install the right drivers with just a click of a button.

Often, your computer system might not be able to update the generic drivers for your hardware and peripherals correctly. There are vital differences between a generic driver and a manufacturer’s driver. Finding the correct driver versions for every hardware component can become tiresome.That’s why a dependable updater can help you find and update your drivers automatically. We strongly suggest the Outbyte Driver Updater, and here’s how to do it:
  1. Download and install the Outbyte Driver Updater app.
  2. Launch the software and wait for the app to detect all incompatible drivers.
  3. Now, it will show you a list of all outdated drivers to select the ones to Update or Ignore.
    OutByte Driver Updater Scan
  4. Click on Update & Apply Selected to download and install the latest versions.
  5. Restart your PC to ensure the applied changes.
Outbyte Driver Updater

Outbyte Driver Updater

Maintain your device healthy by letting OutByte Driver Updater find the latest driver options.
Free trial Download now
Disclaimer: You may need to upgrade the app from the free version to perform specific actions.

5. Enable the critical services

  1. Press Windows + R to open Run, type services.msc, and click OK.service.msc
  2. Locate the Capability Access Manager Service, right-click on it, and choose Properties.properties
  3. Select Automatic from the Startup type dropdown menu, click on Start to run the service, and then on OK to save the changes.run service to fix 0xa00f4243 camera reserved by another app
  4. Make similar changes to Intel(R) RealSense(TM) Depth Camera Manager Service as well, if available.

6. Reset the camera app

  1. Press Windows + I to open Settings, and click on Apps.apps
  2. In the Apps & features tab, click on Camera, and then on Advanced options.advanced options
  3. Click the Reset button.reset to fix 0xa00f4243 camera reserved by another app
  4. Again, click Reset in the confirmation prompt that appears.reset

If the previous solutions didn’t work, it could be an issue with the app itself, and resetting it should fix the 0xa00f4243 Camera reserved by another app error.

Tip icon Tip
In case nothing works, we recommend you update the BIOS. Before you proceed, make sure to check the exact process on the manufacturer’s website to avoid running into issues.

Also, if it turns out to be a hardware issue and you plan to get a new camera, check the best webcams for Windows.

For any other queries or to share a solution that’s not listed here, drop a comment below.

This article covers:Topics: