U File Extension

U file icon
Unreal Tournament Class Package
  • Developer
    Epic Games
  • Category
  • Popularity
    3 (2 votes)

What is U file?

U filename suffix is mostly used for Unreal Tournament Class Package files. Unreal Tournament Class Package format was developed by Epic Games. Files with U extension may be used by programs distributed for Mac OS, Windows platform. U file format, along with 1274 other file formats, belongs to the Game Files category. Users are advised to use Unreal Tournament software for managing U files, although 2 other programs can also handle this type of file. Software named Unreal Tournament was created by Epic Games, Inc.. In order to find more detailed information on the software and U files, check the developer’s official website.

Programs which support U file extension

Below you will find an index of software programs that can be used to open U files divided into 2 categories according to system platform supported. Files with U suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support U file

How to open file with U extension?

There can be multiple causes why you have problems with opening U files on given system. Fortunately, most common problems with U files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with U files.

Step 1. Get the Unreal Tournament

The main and most frequent cause precluding users form opening U files is that no program that can handle U files is installed on user’s system. This one is an easy one. Select Unreal Tournament or one of the recommended programs (for example, UnrealEd) and download it from appropriate source and install on your system. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. If you want to download Unreal Tournament installer in the most secured manner, we suggest you visit Epic Games, Inc. website and download from their official repositories.

Step 2. Update Unreal Tournament to the latest version

If you already have Unreal Tournament installed on your systems and U files are still not opened properly, check if you have the latest version of the software. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. The reason that Unreal Tournament cannot handle files with U may be that the software is outdated. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Unreal Tournament.

Step 3. Associate Unreal Tournament Class Package files with Unreal Tournament

If the issue has not been solved in the previous step, you should associate U files with latest version of Unreal Tournament you have installed on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

The procedure to change the default program in Windows

  • Right-click the U file and choose Open with option
  • Select Choose another app → More apps
  • The last step is to select Look for another app on this PC option supply the directory path to the folder where Unreal Tournament is installed. Now all that is left is to confirm your choice by selecting Always use this app to open U files and clicking OK.

The procedure to change the default program in Mac OS

  • By clicking right mouse button on the selected U file open the file menu and choose Information
  • Find the Open with option – click the title if its hidden
  • From the list choose the appropriate program and confirm by clicking Change for all....
  • A message window should appear informing that This change will be applied to all files with U extension. By clicking Continue you confirm your selection.

Step 4. Check the U for errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the U file in question. It is probable that the file is corrupted and thus cannot be accessed.

1. Check the U file for viruses or malware

If the file is infected, the malware that resides in the U file hinders attempts to open it. Scan the U file as well as your computer for malware or viruses. If the U file is indeed infected follow the instructions below.

2. Verify that the U file’s structure is intact

If the U file was sent to you by someone else, ask this person to resend the file to you. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. It could happen the the download process of file with U extension was interrupted and the file data is defective. Download the file again from the same source.

3. Verify whether your account has administrative rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Switch to an account that has required privileges and try opening the Unreal Tournament Class Package file again.

4. Check whether your system can handle Unreal Tournament

If the system is under havy load, it may not be able to handle the program that you use to open files with U extension. In this case close the other applications.

5. Verify that your operating system and drivers are up to date

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Unreal Tournament Class Package files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle U files.

Do you want to help?

If you have additional information about the U file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on U file.

Top File Extensions
Show more
File Extension of the day
ass icon


Aegisub Advanced Substation Alpha Format

File with .ASS extension contains a script for creating video subtitle text formatted using SubStation Alpha standard. ASS files are generated by A...