Issue: How to Fix Webcam Error Code 0xA00F4243(0xC00D3704) on Windows?
I have recently tried to use the webcam on my Windows computer. Unfortunately, I continuously receive “Close Other Apps. It looks like another app is using a camera already.” message and cannot use it. Also, it indicates error code 0xA00F4243(0xC00D3704) in the notification as well. Is there anything I could do to solve this problem?
Error code 0xA00F4243(0xC00D3704) is an issue which indicates that there is an interruption between two programs using the inbuilt camera on the laptop with Windows OS. Usually, it is displayed together with the following message which pops up when trying to use the webcam:
Close Other Apps. It looks like another app is using a camera already. If you need it, here’s the error code: 0xA00F4243(0xC00D3704)
The webcam 0xA00F4243 0xC00D3704 error code message itself is quite explicit as it indicates the possible culprit of the problem – another application. Therefore, it would be practical to open Task Manager and check what applications are currently running on the system. In case a tool that requires Camera is running, end its task and check if that helps.
Another solution for “it looks like another app is using the camera already” malfunction of the camera would be a clean boot of the system. It would help to isolate the problematic application and, furthermore, repair it. The “another app” may not necessarily refer to Skype, Messenger, or another legitimate application that uses Camera.
It may turn out that the another app to which the 0xA00F4243(0xC00D3704) error message points out is a malicious cyber infection, for example, Trojan, Worm or adware. To check that, you should run a scan with Reimage or another powerful anti-malware tool.
If, however, the “camera reserved by another app” error does not seem to be related to additional software, the culprit may be the webcam’s drivers or its settings. Don’t worry if you are not a tech-savvy Windows user. The instructions on how to fix error code 0xA00F4243(0xC00D3704) are provided down below.
Quarantine the software causing “Camera reserved by another app” error
Technique 1. Troubleshoot Windows applications
To check if any of Windows apps are damaged, run Windows App Troubleshooter. Click on this link and follow the on-screen instructions.
Technique 2. Search for apps on Task Manager that might cause the problem
- Press Ctrl + Shift + Esc or right-click empty space on the toolbar.
- Open “Task Manager” and go to the “Processes” tab.
- Carefully analyze what programs are currently running in the background of the system.
- If you found an app that uses Camera, for example, Skype running in the background, click it, and select “End Task.”
Technique 3. Take advantage of the Clean Boot
- Click “Windows key” and type msconfig.
- Click “System Configuration” and open “Services” tab.
- Mark “Hide all Microsoft services” box and select “Disable all.”
- Open “Startup” tab and click “Open Task Manager.”
- Click on each startup item and select “Disable.”
- Close Task Manager and click “OK” on the System Configuration window.
- Reboot the system.
If Clean Boot helped to fix 0xA00F4243(0xC00D3704) error, we would recommend you to enable apps one by one. After each enabled app, check if the Camera is working. This way, you will isolate the problematic application.
Fix the webcam app to get rid of error code 0xA00F4243(0xC00D3704)
Technique 1. Perform the reset on the camera
- Click Windows key + I to open “Settings.”
- Select “App and Features.”
- Locate Camera and click it.
- Select “Advanced options” and then “Reset.”
- Reboot the PC.
Technique 2. Update webcam’s drivers
- Right-click on Windows key and select “Device Manager.”
- Expand “Imaging devices” and right-click on your system webcam entry.
- Select the “Update Driver Software” option.
- Then click on “Browse my computer for software driver” option.
- Select “Let me pick from a list of device drivers on my computer” option.
- If not checked, check the “Show compatible hardware” option.
- Select USB Video Device and click “Next.”
- The system will automatically update/install the driver. Once done, close Device Manager.
- Reboot the system.
Technique 3. Check privacy settings
- Press Windows key + I to open “Settings.”
- Go to the “Privacy” category and select the “Camera option.”
- Make sure that the “Let apps use my camera” option is turned on.
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