Seeing errors whenever we work on our devices can disrupt our productivity flow. For instance, you may encounter the error message ‘mediatoolbox.dll Is Missing.’ It usually happens when we try to install an app or an update.
Missing Mediatoolbox.dll issue is also accompanied by the error message “System Error The program can’t start because MediaToolbox.dll is missing from your computer. Try reinstalling the program to fix the problem.” This problem arises when the .dll file itself is corrupted or removed. Other possible causes are damaged system files or viruses on your device.
Fixing ‘MediaToolBox.dll Is Missing’ Error Message on Windows PC

While it seems intimidating to experience a problem during installation or updates, there are potential solutions that can help you troubleshoot an essential file that cannot be found. DLL files are often needed when installing new programs, so best to try to fix this issue first.
#1 – Perform a SFC Scan
Launch the Run Dialog Box by pressing Windows key + R. Enter CMD and run it as administrator. Enter the command: sfc /scannow. Wait for the scan to finish.
#2 – Manually Download a new mediatoolbox.dll File
You will need to download a new copy of the mediatoolbox.dll file. After downloading, copy the file and paste it to the installation folder of the app or the system folder.
Now, register the .dll file. Open the Run Dialog Box and run it as administrator. Enter the following command for 32-bit and 64-but respectively: regsvr32 c:\windows\system32\mediatoolbox.dll or regsvr32 c:\windows\syswow64\mediatoolbox.dll.
Another method is to delete the old file first before registering the new file. After downloading the files, launch the Run Dialog Box with admin privileges. Then, delete the file by entering the command: regsvr32 /u mediatoolbox.dll. Lastly, register the file by entering the command: regsvr32 mediatoolbox.dll. Check if it works for you.
#3 – Reinstall the Problematic App or Update
You can try reinstalling the app or the Windows Update. To reinstall the app, you will need to uninstall the existing app first before you reinstall a fresh version.
To install Windows Update, head over to the Settings menu and select Update & Security. Navigate to Windows Update and click Check for Updates. Click Install Now.
Summing Up!
File errors are unavoidable whenever you need to install an app or an update. But, rest assured that there are always solutions that will help you fix these issues.