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Knowledge document #221

Error message "Could not find the AVM VPN driver"

The FRITZ!VPN software does not start on a computer with Windows 8 / 7. One of the following error messages is displayed:

  • "Could not find the AVM VPN driver. No connections can be established. Read the Help for information about how to remedy this problem."
  • "Could not find the AVM VPN driver. Read the Help for information about how to install the AVM VPN driver manually. Cause: Illegal function".

Cause

  • The AVM VPN driver was not correctly installed when installing FRITZ!VPN.

1 Manually uninstalling the AVM VPN driver

  1. Open the overview of network connections:
    • Windows 8
      1. Press the keyboard shortcut Windows key + X and select "Control Panel" from the context menu.
      2. Select "Category" from the drop-down list "View by:" on the top right ().
      3. Click "Network and Internet" and then "Network and Sharing Center".
      4. Click "Change adapter settings".
      5. Click the arrow next to the (Change view) button in the menu bar and select "Details".
    • Windows 7
      1. In Windows, click "Start" and then "Control Panel".
      2. Select "Category" from the drop-down list "View by:" on the top right ().
      3. Click "Network and Internet" and then "Network and Sharing Center".
      4. Click "Change adapter settings".
      5. Click the arrow next to the "Change view" button in the menu bar and select "Details".
  2. Right-click the connection for the network adapter used to establish the internet connection.
  3. Click "Properties" and then "Continue" ("Continue" is not always available).
  4. If the entry "AVM VPN Driver" is displayed:
    1. Mark the entry "AVM VPN Driver" and click "Uninstall".
    2. Click "Yes" and "OK" to confirm that you want to uninstall.
    3. Restart your computer.

2 Manually installing the AVM VPN driver

  1. Open the overview of network connections:
    • Windows 8
      1. Press the keyboard shortcut Windows key + X and select "Control Panel" from the context menu.
      2. Select "Category" from the drop-down list "View by:" on the top right ().
      3. Click "Network and Internet" and then "Network and Sharing Center".
      4. Click "Change adapter settings".
      5. Click the arrow next to the (Change view) button in the menu bar and select "Details".
    • Windows 7
      1. In Windows, click "Start" and then "Control Panel".
      2. Select "Category" from the drop-down list "View by:" on the top right ().
      3. Click "Network and Internet" and then "Network and Sharing Center".
      4. Click "Change adapter settings".
      5. Click the arrow next to the "Change view" button in the menu bar and select "Details".
  2. Right-click the connection for the network adapter used to establish the internet connection.
  3. Click "Properties" and then "Continue" ("Continue" is not always available).
  4. Click "Install" and then "Service and "Add".
  5. Click "Have Disk" and then "Browse".
  6. Select the path to FRITZ!VPN (for example "C:\Programs\FRITZ!VPN").
  7. Select the file "avmnwim.inf", then click "Open" and "OK".
  8. Under "Network service", select "AVM VPN Driver" and click "OK"
  9. If the message "AVM VPN Miniport software did not pass the Windows logo test" is displayed, click "Continue".
  10. Restart your computer.
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