1. CNS File Extension
2. How to open CNS file?

2.1 Download and install application that supports CNS files
1. 2.1.1 Programs that support CNS files
2.2 Verify whether CNS files are associated with appropriate software
2.3 Check CNS file for other errors

3. Similar file extensions

CNS File Extension

File type Windows 2000 Client Connection Manager Export Format
File developer Microsoft
File category System Files
File popularity rating

How to open CNS file?

If given user account does not have necessary permissions to open files with CNS 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 CNS files

After the application has been installed, the system should automatically open CNS files with given application. Below is the list of relevant programs along with operating systems they are available for:

Programs that support CNS files

Windows

Microsoft Windows 2000

Step 2. Verify whether CNS files are associated with appropriate software

It is possible that an application that supports CNS files is not associated with such files. In such case, the program should by manually associated with CNS 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 CNS 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 CNS files with the selected program.

Changing CNS file association in registry

File association for CNS 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 CNS file for other errors

CNS file was not copied properly from storage medium.
Antivirus application prevents opening CNS files. In that case it is recommended to exercise extreme caution and recover or delete infected CNS file. It is also advised to scan the entire system for malicious software and viruses with antivirus software.
For CNS 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.

Similar file extensions

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