When accessing the Camera app on Windows 11, you may encounter the message ‘All cameras are reserved’ with the error code 0xa00f4288. This could happen for various reasons, ranging from a lack of necessary permissions to faulty camera drivers. Fortunately, troubleshooting the error isn’t too difficult if you know where to look.
First restart or shut down your computer.
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If it doesn’t work go to settings.
![](https://www.nucleiotechnologies.com/wp-content/uploads/2023/04/image-62.png)
Go to Privacy and Security scroll down in app permission and click the camera settings.
![](https://www.nucleiotechnologies.com/wp-content/uploads/2023/04/image-63.png)
Then make sure that the camera apps are on.
![](https://www.nucleiotechnologies.com/wp-content/uploads/2023/04/image-64.png)
If problem still lingers search for the troubleshoot settings.
![](https://www.nucleiotechnologies.com/wp-content/uploads/2023/04/image-65.png)
Search of the camera and run it.
![](https://www.nucleiotechnologies.com/wp-content/uploads/2023/04/image-67.png)
Click yes and restart you’re computer this should fix the problem.
![](https://www.nucleiotechnologies.com/wp-content/uploads/2023/04/image-68.png)
Unless there is a hardware issue, one of the solutions listed above should resolve the ‘All cameras are reserved’ error in Windows 11. Apply them all and thanks for reading.