What is avgnsa.exe?

The genuine avgnsa.exe file is a software component of AVG Internet Security by AVG Technologies.
A network security application, this process starts with Windows and runs in the background. It scans network threats in real-time, whether they are web-based, or files transferred via email or ftp. If a threat or issue is detected, it is blocked and you are alerted until you decide whether you want the issue allowed or not. Founded in 1991, AVG Technologies is based in the Netherlands and focuses primarily on security software.

AVGNSA stands for AVG Network Scanner Application

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 avgnsa.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.

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Avgnsa.exe file information

Windows Task Manager with avgnsa
Avgnsa.exe process in Windows Task Manager

The process known as AVG Online Shield Service or AVG Network scanner Service belongs to software AVG Internet Security by AVG Technologies CZ, s.r.o (

Description: Avgnsa.exe is not essential for the Windows OS and causes relatively few problems. Avgnsa.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,680,296 bytes (9% of all occurrences), 1,312,208 bytes and 23 more variants. 
The program is not visible. It is a Verisign signed file. The file has a digital signature. It is not a Windows core file. The software can be removed using the Control Panel's Add\Remove programs applet. Therefore the technical security rating is 6% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case you experience problems using avgnsa.exe, you can also visit the website or uninstall AVG or AVG 2015 from your computer using the Control Panel applet Uninstall a Program.

Recommended: Identify avgnsa.exe related errors

Important: Some malware camouflages itself as avgnsa.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the avgnsa.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.


User Comments

avg nsa steht das fuer national security agency oder was???
If you have AVG, this is a core process for the program. If you don't care about the program, you can safely stop it.
  Helping Person   (further information)
If you have AVG, this is a core process for the program. If you don't care about the program, you can safely stop it.
  Helping Person   (further information)

Summary: Average user rating of avgnsa.exe: based on 3 votes with 3 user comments. 3 users think avgnsa.exe is essential for Windows or an installed application. One user is not sure about it.

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Best practices for resolving avgnsa issues

A clean and tidy computer is the key requirement for avoiding problems with avgnsa. 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 avgnsa.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

avgnsa.exe [all]