NAV file icon

NAV File Extension

Id Tech 3 Bot Navigation Format
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What is NAV file?

NAV is a file extension commonly associated with Id Tech 3 Bot Navigation Format files. Id Tech 3 Bot Navigation Format format was developed by Valve. NAV files are supported by software applications available for devices running Mac OS, Windows. NAV file format, along with 1509 other file formats, belongs to the Game Files category. Users are advised to use Counter-Strike: Source software for managing NAV files, although 3 other programs can also handle this type of file.

Programs which support NAV file extension

Below you will find an index of software programs that can be used to open NAV files divided into 2 categories according to system platform supported. NAV files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Programs that support NAV file

How to open file with NAV extension?

Problems with accessing NAV may be due to various reasons. Fortunately, most common problems with NAV files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install Counter-Strike: Source

Install software to open NAV file Problems with opening and working with NAV files are most probably having to do with no proper software compatible with NAV files being present on your machine. The most obvious solution is to download and install Counter-Strike: Source or one to the listed programs: Quake 3, Half-Life: Counter Strike. 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 Counter-Strike: Source installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Verify the you have the latest version of Counter-Strike: Source

Update software that support file extension NAVIf you already have Counter-Strike: Source installed on your systems and NAV files are still not opened properly, check if you have the latest version of the software. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. This can be one of the causes why NAV files are not compatible with Counter-Strike: Source. The latest version of Counter-Strike: Source should support all file formats that where compatible with older versions of the software.

Step 3. Assign Counter-Strike: Source to NAV files

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

Associate software with NAV file on Windows

Selecting the first-choice application in Windows

  • Clicking the NAV with right mouse button will bring a menu from which you should select the Open with option
  • Select Choose another app → More apps
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the Counter-Strike: Source installation folder. Confirm by checking Always use this app to open NAV files box and clicking OK button.
Associate software with NAV file on Mac

Selecting the first-choice application in Mac OS

  • From the drop-down menu, accessed by clicking the file with NAV extension, select Information
  • Proceed to the Open with section. If its closed, click the title to access available options
  • Select the appropriate software and save your settings by clicking Change all
  • A message window should appear informing that This change will be applied to all files with NAV extension. By clicking Continue you confirm your selection.

Step 4. Ensure that the NAV file is complete and free of errors

Should the problem still occur after following steps 1-3, check if the NAV file is valid. Being unable to access the file can be related to various issues.

Check NAV file for viruses
1. The NAV may be infected with malware – make sure to scan it with an antivirus tool.

If the NAV is indeed infected, it is possible that the malware is blocking it from opening. Scan the NAV file as well as your computer for malware or viruses. NAV file is infected with malware? Follow the steps suggested by your antivirus software.

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

If the NAV file was sent to you by someone else, ask this person to resend the file to you. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with NAV extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open Counter-Strike: Source

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

5. Ensure that you have the latest drivers and system updates and patches installed

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Id Tech 3 Bot Navigation Format file. It may be the case that the NAV files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the NAV 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 NAV file.

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