If you are encountering error messages related to gmpopenh264.dll or want to prevent it from running on the PC, the following methods might help fix the issue.
1. Disable OpenH264 Video Codec
If you want to just disable the gmpopenh264.dll file from running in the task manager, you can do this by simply navigating to the Firefox settings. However, disabling it will impact on the WebRTC functionality. Meaning that you might not be able to make real-time communication, such as chatting or video calling through your browser.
2. Reinstall the Firefox
If you want to restore the gmpopenh264.dll file, the best way is to simply reinstall the Firefox application. After reinstalling it, the gmpopenh264.dll will be downloaded automatically once you launch the Firefox application.
3. Download the DLL file Manually
Another way to restore the corrupted DLL file is to download it manually. However, we recommend this only if the solutions listed above fail to restore the DLL file. Downloading the DLL file manually can be beneficial, as long as you use trusted websites.
4. Perform a Malware Scan
The gmpopenh264.dll is a legitimate DLL file, but that does not mean it cannot be malware. Some malware uses the names of the DLL files to run on the PC. Therefore, you should run a full system scan on your PC to remove any malware. We will use Windows Defender Scanner for demonstration, but you can use any reliable third-party antivirus software.
