Tips to open CMN file

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

CMN file extension

File Name Systems Management Server (SMS) Update
File Developer Microsoft Corporation
File Category Misc Files

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

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

What is CMN file?

The file with the extension CMN is the Misc Files file type. The creator of this file is Microsoft Corporation. Misc Files consists of 6033 similar files. Systems Management Server (SMS) Update is most often found on 1 operating systems. The file will work on Windows systems, unfortunately not on others.

How to open CMN file?

The main problem with Systems Management Server (SMS) Update is that the CMN file is incorrectly associated with programs. This causes the file CMN to open by system applications not designed for this purpose, or to display a message that there is no associated program. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the CMN 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 Microsoft Systems Management Server (SMS)

An often overlooked issue is to make sure that Microsoft Systems Management Server (SMS) is installed on the computer. This can be achieved by typing Microsoft Systems Management Server (SMS) into the operating system search engine. If it is not, installation may solve the problem, as most applications create file associations during installation. Below you will find a list of applications that support CMN files.

Programs to open CMN file

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

Step 2. Create association of Microsoft Systems Management Server (SMS) with CMN files

If, despite the installed application, the CMN file does not start in the Microsoft Systems Management Server (SMS) application, you must create a file association. It is most convenient to call the context menu with the right mouse button and select Properties. The displayed window will contain information about the program that supports this type of file. Using the "Change" button we can set the program to handle this type. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. However, it is important to check the "Always use the selected program ..." box, this will allow you to permanently associate the CMN file with the Microsoft Systems Management Server (SMS) application.

Step 3. Update Microsoft Systems Management Server (SMS) to the latest version

If, despite the association of the Microsoft Systems Management Server (SMS) program with the Systems Management Server (SMS) Update file, the file still does not open, check the program version and possibly update it to the newest version.

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

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

The CMN file may be unusually small compared to the original file. This is most often caused by a problem while downloading the CMN file. The only repair option is to download the file again.
The computer may have fallen victim to a computer virus or hacker. Perform a virus scan using available and up-to-date anti-virus software. Alternatively, you can use the scanners available online. For the best results, we will scan the entire operating system, not just our CMN file. As a result of the scan, sometimes it is not possible to recover CMN files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
This can happen especially when the program is dynamically developed and the structure of the CMN files changes over time. Help should be sought from the software developer, as they usually recommend using free file converters or installing an older version of the program.
The file may be corrupted in a number of ways. The repair method must be adapted to the type of file and damage. Some programs offer the option of recovering data from damaged CMN files.
When reading, a message appears that the file was encrypted or corrupted. The encrypted file CMN except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
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 CMN to a different directory.
This can happen on a file that does not support multiple access. In this case, the CMN file is blocked by the first application to open it. Running programs (including those in the background) should be verified. Sometimes you have to wait for the session to the file CMN to close. However, some background programs may block the CMN file while scanning. If the problem persists, restart the machine.