Resolve avgnsx.exe Error

The process avgnsx.exe is the network scanner for AVG Internet Security. The main purpose of this process is to prevent users from opening unsafe web pages. The file program keeps track of your internet-related activities, and if you happen to click on an unsafe web page, avgnsx.exe prevents it from loading.

File Information

The file is located in a subfolder of C:\Program Files. The most common size of this file in Windows XP is 594, 712 bytes. You may also find the file in 595,736, 431,896, 620,896,600, 617,752, 593,176, 344, 432,408, 420,632424,216, 592,128, 437,016, 591,640, 422,680, 408,344, 594,200 bytes sizes.

Error 1

You may encounter the following error when you try to open your web browser:

“avgnsx.exe has encountered a problem and needs to close”


A workaround this error is to uninstall your AVG software and reinstall the program using the Custom installation option and removing the Link Scanner option.

Error 2

The following error message appears when you open your web browser:

“The instruction at 0x7c9101b3 reference at 0x781ffcfe memory cannot be written. avgnsx.exe application error”


A workaround this is issue is to disable the Link Scanner component of your AVG software. Perform the following steps for the same:

  1. Right click the AVG icon in your system tray and select Open.
  2. Disable Link Scanner.
  3. Save the changes.
  4. Exit the AVG user interface.


The biggest criticism of this process by AVG users is that the process, periodically and for a considerable length of time, hogs the bandwidth by as much as up to 90%.

By design, this process monitors the web pages you click, so it requires bandwidth when it is intercepting the traffic entering or leaving your computer. However, continuous bandwidth hogging can cause a lot of discomfort. You might be playing an online game or just surfing the internet and suddenly, avgnsx.exe starts using a lot of bandwidth, slowing down browsing in the process.

To fix the issue of bandwidth hogging, you may use any of the following options:

  1. Set avgnsx.exe priority below normal
    By design, the process is given priority above many other tasks. However, you can set its priority below normal:

    1. Click Ctrl+Alt+Del or Ctrl+Shift+Esc to open the Task Manager window.
    2. Locate and right click avgnsx.exe.
    3. Click Set Priority, and then click Below Normal.
  2. Disable the Link Scanner component
    Open the AVG user interface and disable the Link Scanner component.
  3. Install another protective software
    Uninstall AVG Internet Security and install another protective software, one which aptly protects your PC, but does not hog bandwidth or CPU resources.