This usually happens because of problems with the operating system after installing the Windows 10 Mobile Insider or Fall Creators Update. It can also happen if the SD card is full or if the app data is damaged.
1. Perform a Hard Reset
Press and hold the Volume Down button, and while holding it, quickly press and release the Power button. This action should make your device vibrate.
2. Roll Back to a Previous Version of Windows Mobile
If a hard reset does not resolve error code 0xA00F4246 (0xC00D36B6), the next best option is to return to a previous version of Windows Mobile—the one on which your camera was working normally. Please be aware that rolling back may erase some or all of your personal files and data, so make sure to back up anything important first. You’ll also need a Windows computer and a USB cable to connect your phone. The required files will likely be larger than 1GB, so please be patient while the firmware is downloaded and installed. It’s important to keep your phone connected to your computer throughout the process. After the installation is complete, you’ll see a message saying “Operation successfully completed.” At this point, you can restart your device.
3. Wait for a New Firmware Update
If you’ve updated to a certain version of the Windows 10 Mobile Insider Preview and your camera is not working because of error code 0xA00F4246 (0xC00D36B6), it’s likely that other users are facing the same problem. Microsoft is probably aware of this issue. If you are able to manage without your camera for a few weeks, you can stay on the Insider Preview and wait for the next update. Hopefully, the upcoming update will fix the camera issues—along with error code 0xA00F4246 (0xC00D36B6). By following these steps, you should be able to get your camera working again or at least know what to expect moving forward.
