C4U File Description

By:   |   Updated: November 15, 2018

Microsoft Silver

C4U File Summary

The C4U File Extension has one primary file type, OpenClonk Update System File format, and can be opened with OpenClonk released by Open Source. The C4U File Extension are listed predominantly as Game Files.

File Extension C4U files have been identified on both desktop and mobile devices. They are fully or partially supported by Windows, Mac, and Linux. C4U files have a "Low" Popularity Rating; this means that they are not present on most devices.

Although there is a lot more to know about C4U files, those are the most important details of these types of files. If you are having trouble opening these files, or would like more detailed information, please see our comprehensive information below.

Low
Popularity
9769
Position

/ 11690

Active

Mode

15

November

2018

Page Last Updated

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Types of C4U Files


Leading C4U Type

.C4U
Formatting:.c4u
Classification:OpenClonk Update System File

The C4U file is basically used in a free action video game known as OpenClonk. The C4U files contain updating files which are found as update.C4U.

Developer: Open Source
Group:Game Files
Registry Key: HKEY_CLASSES_ROOT\.c4u

Software Programs That Open The OpenClonk Update System File:


OpenClonk by Open Source

Windows
Mac
Linux

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C4U Popularity


OS Ranking

7 (45.73%)
10 (44.56%)
8.1 (5.41%)
XP (2.79%)
8 (0.97%)


Sources of C4U Problems


Common C4U Opening Problems

OpenClonk Isn't There

If you attempt to load your C4U file, you experience a message such as "Can't Open C4U Files". If this is the case, it's usually due to the fact that you do not have OpenClonk for %%os%% installed on your computer. The typical path of opening your C4U with a double-click won't work because %%os%% cannot make the program connection.


Tip: Another C4U-related program can be selected to open the file by clicking "Show Apps" and finding the application.


Incorrect OpenClonk Version

It is possible that your version of OpenClonk isn't able to open your OpenClonk Update System File file due to incompatibility. Visit the Open Source website to download (or purchase) the latest version of OpenClonk. This issue mainly occurs when your OpenClonk Update System File file was created by a newer version of OpenClonk than you have on your PC.


Tip: Investigate your C4U file by right-clicking and selecting "Properties" to find clues on what version you need.


Regardless, most of the C4U file opening problems relate to not having the right version of OpenClonk installed.


Other Causes of C4U File Opening Problems

In the majority of cases, installing the right version of OpenClonk will resolve your issue. If you are still having problems opening C4U files, there may be other issues that are preventing you from opening these files. Other contributing causes:

  • Windows Registry C4U file paths that are incorrect
  • Unintentional removal of the description of the C4U file inside the Windows Registry
  • Partial installation of OpenClonk that did not fully complete
  • The C4U itself is corrupted
  • C4U file integrity has been compromised by malware
  • Hardware associated with C4U has outdated drivers
  • Your computer does not have the adequate system resources to open the OpenClonk Update System File format

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