What is NasNavi.exe?

The genuine NasNavi.exe file is a software component of NASNavigator2 by Buffalo.
NasNavi.exe is an executable file that runs the NasNavigator2 program, a utility tool for Buffalo's LinkStation and TeraStation. This is not an essential Windows process and can be disabled if known to create problems. Buffalo's network attached storage (NAS) is a cloud storage solution for home, small office and business users. NAS features easy file sharing and back up utilities for multiple PC and Macintosh computers. Buffalo Inc. is a Japanese company which first started off as a manufacturer of audio equipment. It is currently a subsidiary of Melco Holdings Inc. In 1981, Buffalo made its entry into the computer peripheral market by developing their first EEPROM (Electrically Erasable Programmable Read-Only Memory) writer capable of storing small amounts of non-volatile memory. The company derives its name from the American Bison.

NASNavi stands for NASNavigator2

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the NasNavi.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for NasNavi.exe related errors

NasNavi.exe file information

The process known as NASNaviator2 or Buffalo NAS Client Utility belongs to software NASNaviator2 or BUFFALO NAS Navigator2 or NasClient by BUFFALO INC ( or Buffalo.

Description: NasNavi.exe is not essential for the Windows OS and causes relatively few problems. NasNavi.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,978,468 bytes (30% of all occurrences), 1,945,700 bytes and 5 more variants. 
The NasNavi.exe file is not a Windows core file. The program has no visible window. The application starts upon Windows startup (see Registry key: User Shell Folders, MACHINE\User Shell Folders). NasNavi.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 40% dangerous.

Uninstalling this variant: It is possible to do the following:
  • get help from the software vendor Buffalo
  • check the vendor’s website for a newer version
  • safely remove the program using the uninstall program of BUFFALO NAS Navigator2 (Control Panel ⇒ Uninstall a Program)

Recommended: Identify NasNavi.exe related errors

Important: Some malware camouflages itself as NasNavi.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the NasNavi.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


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Best practices for resolving NasNavi issues

A clean and tidy computer is the key requirement for avoiding problems with NasNavi. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the NasNavi.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

NasNavi.exe [all]