I cannot open a TNL file. What should I do? Help!

Virtually anyone has encountered some problems with opening unknown files while working on a computer. It can be very frustrating. Yet such problems, not only with TNL files, can be addressed in a standard way. Follow the steps below and we can guarantee that your problem with opening TNL will be resolved!

TNL File Extension

File
  • File type Thumbnail Image Format
  • File developer N/A
  • File category Raster Image Files
  • File popularity rating
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What is a(n) TNL file?

Files with the .TNL extension are characteristic for Nokia phones that support Android. The files contain information about thumbnail formats created for images or video files. The extension is deprecated and is not supported by newer devices.

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How to open TNL file?

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

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

Programs that support TNL files

Windows programs
Windows

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

It is possible that an application that supports TNL files is not associated with such files. In such case, the program should by manually associated with TNL files (right-click on the file icon → PropertiesGeneral Tab → In submenu "Open with" and click on "Change" button. System will display a list of suggested programs that support TNL 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 TNL files with the selected program.

Changing TNL file association in registry

File association for TNL 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 TNL file for other errors

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

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