I cannot open a M4U file. What should I do? Help!
Virtually anyone has encountered some problems with opening unknown files while working on a computer. It can be very frustrating. Yet such problems, not only with M4U files, can be addressed in a standard way. Follow the steps below and we can guarantee that your problem with opening M4U will be resolved!
M4U File Extension
- File type MPEG-4 Playlist
- File developer N/A
- File category Video Files
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File popularity rating
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How to open M4U file?
If given user account does not have necessary permissions to open files with M4U extension, it is highly probable that no program that supports given files is installed on the users’ system. Below is a list of actions user should pursue in order to resolve most common problems.
Step 1. Download and install application that supports M4U files
After the application has been installed, the system should automatically open M4U files with given application. Below is the list of relevant programs along with operating systems they are available for:
Programs that support M4U files
Step 2. Verify whether M4U files are associated with appropriate software
It is possible that an application that supports M4U files is not associated with such files. In such case, the program should by manually associated with M4U files (right-click on the file icon → Properties → General Tab → In submenu "Open with" and click on "Change" button. System will display a list of suggested programs that support M4U files. Choose the application by checking the box "Always use the selected application to open this kind of files". System will store this information in its registry and use it to open M4U files with the selected program.
Changing M4U file association in registry
File association for M4U files can be edited manually by editing appropriate entry in Windows System Registry. However, it is discouraged as it may introduce errors to registry if not done properly and may even damage the system.
Step 3. Check M4U file for other errors
- M4U file was not copied properly from storage medium.
- Antivirus application prevents opening M4U files. In that case it is recommended to exercise extreme caution and recover or delete infected M4U file. It is also advised to scan the entire system for malicious software and viruses with antivirus software.
- For M4U files downloaded from the internet it is advised to check if the file has been downloaded completely and is not corrupted. If not, the file should be re-downloaded.
