TWL file icon

TWL File Extension

Naviguide Binary Route

What is TWL file?

TWL is a file extension commonly associated with Naviguide Binary Route files. Files with TWL extension may be used by programs distributed for Windows platform. TWL file format, along with 255 other file formats, belongs to the GIS Files category. GPSBabel is by far the most used program for working with TWL files. Software named GPSBabel was created by In order to find more detailed information on the software and TWL files, check the developer’s official website.

Programs which support TWL file extension

Below is a table that list programs that support TWL files. TWL files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Programs that support TWL file

Windows Windows

How to open file with TWL extension?

Being unable to open files with TWL extension can be have various origins. On the bright side, the most encountered issues pertaining to Naviguide Binary Route files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with TWL files.

Step 1. Install GPSBabel software

Install software to open TWL file The most common reason for such problems is the lack of proper applications that supports TWL files installed on the system. To address this issue, go to the GPSBabel developer website, download the tool, and install it. It is that easy On the top of the page a list that contains all programs grouped based on operating systems supported can be found. The safest method of downloading GPSBabel installed is by going to developer’s website ( and downloading the software using provided links.

Step 2. Update GPSBabel to the latest version

Update software that support file extension TWLIf you already have GPSBabel installed on your systems and TWL files are still not opened properly, check if you have the latest version of the software. Software developers may implement support for more modern file formats in updated versions of their products. The reason that GPSBabel cannot handle files with TWL may be that the software is outdated. The most recent version of GPSBabel is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Assign GPSBabel to TWL files

If the issue has not been solved in the previous step, you should associate TWL files with latest version of GPSBabel you have installed on your device. The method is quite simple and varies little across operating systems.

Associate software with TWL file on Windows

The procedure to change the default program in Windows

  • Clicking the TWL with right mouse button will bring a menu from which you should select the Open with option
  • Next, select the Choose another app option and then using More apps open the list of available applications
  • Finally select Look for another app on this PC, point to the folder where GPSBabel is installed, check the Always use this app to open TWL files box and conform your selection by clicking OK button
Associate software with TWL file on Mac

The procedure to change the default program in Mac OS

  • From the drop-down menu, accessed by clicking the file with TWL extension, select Information
  • Find the Open with option – click the title if its hidden
  • Select GPSBabel and click Change for all...
  • Finally, a This change will be applied to all files with TWL extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Check the TWL for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper TWL file. Being unable to access the file can be related to various issues.

Check TWL file for viruses
1. Check the TWL file for viruses or malware

Should it happed that the TWL is infected with a virus, this may be that cause that prevents you from accessing it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. TWL file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with TWL extension is complete and error-free

If the TWL file was sent to you by someone else, ask this person to resend the file to you. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. If the TWL file has been downloaded from the internet only partially, try to redownload it.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the Naviguide Binary Route file.

4. Make sure that the system has sufficient resources to run GPSBabel

If the system is under havy load, it may not be able to handle the program that you use to open files with TWL extension. In this case close the other applications.

5. Check if you have the latest updates to the operating system and drivers

Latest versions of programs and drivers may help you solve problems with Naviguide Binary Route files and ensure security of your device and operating system. It is possible that one of the available system or driver updates may solve the problems with TWL files affecting older versions of given software.

Conversion of a TWL file

File Conversions from TWL extension to a different format
File conversions from other format to TWL file
Do you want to help?

If you have additional information about the TWL file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on TWL file.

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