How to Disable/Remove/Uninstall Nvappfilter.dll Module

Nvappfilter.dll is a Network Access Manager. This process belongs to the NVidia Nforce Drivers program from NVIDIA.  Nvappfilter.dll is the Internet Access Manager, and is also known as the NVIDIA Firewall. Uninstalling this file will cause you to lose the ability to access the Internet.

Associated Issues:

Nvappfilter.dll and associated applications have been reported to cause high CPU consumption and application crashes.

Nvappfilter.dll has also shown certain incompatibilities with uTorrent and Azureus.  uTorrent has warned that nvappfilter.dll may even cause the program to crash, use up all of your RAM and freeze your system.

There have also been complaints from users that downloaded files are often corrupted. Some users have also complained that the machines with the nvappfilter.dll file had problems discerning the LAN speed of the network the machine was connected to.

Here are a few suggested solutions:

Solution 1

Users who want to delete the nvappfilter.dll file but find themselves unable to do so need to unregister the file by following the steps below:

  1. Go to Start and then proceed to Run.
  2. Type in regsvr32.exe /u %windir%\system32\nvappfilter.dll.
  3. Click OK.
  4. After unregistering the file, you may now proceed to deletion.

Solution 2

  1. Uninstall the Nforce Ethernet + Network Access Manager
  2. Reinstall only the Nforce Ethernet driver.

Solution 3

Uninstall by running the NAMSetup.exe on your Installation Disk.

  1. Run this file from your motherboard install disk: \Drivers\Chipset\32bit\XP\Ethernet\NAM\NAMSetup.exe.
  2. Choose Uninstall instead of Modify/Repair.
  3. This will stop your bittorrent client from crashing.

Solution 4

  1. Go to Start and then proceed to Control Panel.
  2. Go to Add/Remove programs and locate the NVIDIA block.
  3. Remove NVIDIA ForceWare Network Access Manager. This will uninstall the firewall.
  4. Reboot your PC.
  5. Go back to Add/Remove programs.
  6. Remove the NVIDIA drivers.
  7. A menu will appear.
  8. Choose Custom.
  9. Check only the box for Ethernet driver. Leave all other boxes blank.
  10. Reboot your PC.
  11. Go to C:\NVIDIA\nForceWin2KXP\x.xx\Ethernet\NAM.  Here, x.xx represents the driver version that is currently installed.
  12. Run the NetworkAccessManagerSetup.exe file.
  13. Check the box for the Ethernet driver field in the menu. Leave the others blank.
  14. The driver will install and you will be asked if you want to install the firewall.
  15. Click Yes.
  16. Reboot your PC.

Solution 5

  1. Go to Start.
  2. Proceed to Settings.
  3. Go to Control Panel and then go to Add/Remove programs.
  4. Locate NVIDIA ForceWare Network Access Manager.
  5. Select Modify and uncheck Intelligent Application manager.