Tips to open CMU file

Can't open the CMU file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open CMU files as well as a list of programs that support CMU files.

CMU file extension

File Name CMU Window Manager Bitmap Image
File Category Graphic Files

The CMU file is supported on 1 operating systems. Depending on your operating system, you may need different software to handle the CMU files. Below is a summary of the number of programs that support and open the CMU file on each system platform.

Operating systems
  • 1
  • 0
  • 0
  • 0
  • 0
  • 0

What is CMU file?

The CMU file has been categorized as Graphic Files. Graphic Files consists of 524 similar files. CMU Window Manager Bitmap Image is most often found on 1 operating systems. Although it can be found with greater or lesser success on any operating system, it will only be useful on Windows. The main program that supports this format is XnView. This was created by Pierre-Emmanuel Gougelet.

How to open CMU file?

An often recurring problem with CMU Window Manager Bitmap Image is that CMU is not associated with the correct program file. Thus, when you open CMU, the program selection wizard or some other program starts. This can be quickly resolved by following the instructions below.

The first thing you should do is just "doubleclick" on the CMU file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install XnView

In this case, you should first verify that the XnView application is installed on the computer. This can be achieved by typing XnView into the operating system search engine. In the absence of an appropriate program, its installation in the vast majority of cases will fix the problem. Later in this article you will find a list of programs that can open CMU files.

Programs to open CMU file

Remember to download programs supporting CMU files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of XnView with CMU files

If the application is or has been freshly installed, but the CMU file still does not use the XnView program, it means no association. It is most convenient to call the context menu with the right mouse button and select Properties. Information about the file and the program that the file is associated with are available here. Changes can be made using the "Change" button. The program should be visible in the window, otherwise it should be selected manually using the "Browse" button and the program installation directory should be indicated. However, it is important to check the "Always use the selected program ..." box, this will allow you to permanently associate the CMU file with the XnView application.

Step 3. Update XnView to the latest version

If, however, after binding XnView with CMU Window Manager Bitmap Image there were still problems, you should update the program to the latest version. This can be done using the application (if it provides such options) or from the Pierre-Emmanuel Gougelet website and install the latest version.

Step 4. Check for the following problems with the CMU file

The problem may also be with the file itself if the above steps don't work. The most common file problems are:

The CMU file may be unusually small compared to the original file. This suggests truncating the CMU file contents when downloading or copying. The file should be downloaded again, making sure that the process has finished correctly.
The most common cause here is computer viruses. A virus scan using an up-to-date antivirus program should fix the problem. If this is not possible, you can use the online scanner. For the best results, we will scan the entire operating system, not just our CMU file. As a result of the scan, sometimes it is not possible to recover CMU files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
Older version of CMU file may not always be supported by the latest software version. On their websites, developers usually offer free solutions to such problems, e.g. in the form of a conversion program or an older version of the program.
There can be many reasons for this. Depending on the type of file, it is necessary to repair it accordingly. Some programs offer the ability to automatically repair CMU file corruption. You can restore the file from a backup or use N/A help.
The program indicates that the file is encrypted or corrupted. The encrypted CMU files cannot be played on other computers than the one on which they were encrypted, they must be decrypted before using on another device.
The operating system protects files in some locations (e.g. the root of the system partition) against unauthorized access. These directories are write-protected to them and it's very hard to fix this problem. It is best to move CMU to a different directory.
This problem usually affects more complex files. You may find that another program you are using is preventing you from working with the file. Running programs (including those in the background) should be verified. Sometimes you have to wait for the session to the file CMU to close. However, some background programs may block the CMU file while scanning. If nothing helps, please reset the device.