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The Base Filtering Engine is a service that controls Firewall and IPSec policies by filtering user modes.

The installation of a Kaspersky application may fail if the Base Filtering Engine is missing. To install your Kaspersky application successfully, check that the Base Filtering Engine service exists in your operating system.

The guide below is addressed to experienced users. Incorrectly made changes to the Base Filtering Engine can cause malfunction of the operating system.
 

How to check for the Base Filtering Engine and start it

  1. Press Win + R on your keyboard.
  2. Enter services.msc in the search field and click OK.
  3. Find the Base Filtering Engine in the list of services.

Base Filtering Engine in list of services

  1. Make sure that it is running. You should see the status Running in the Status column.
    If this status is not displayed, right-click on the Base Filtering Engine service and select Start from the shortcut menu.

The Base Filtering Engine service is now running.

 

What to do if you get the “Access denied” error when starting Base Filtering Engine

When starting Base Filtering Engine, you may get “Error 5” (access denied).

Solution

  1. Open the registry editor. For instructions, see this article.
  2. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
  3. Right-click BFE and select Permissions in the context menu.

The registry editor window with BFE service selected

  1. Click Advanced.

BFE service permissions

  1. Click Add.

Advanced security settings for BFE window with the Add button highlighted

  1. Click Select a principal.

The Permission entry for BFE window with the Select a principal link

  1. Type Everyone and click OK.

Everyone set as an object name for a user created for the BFE service

  1. Select the Full Control checkbox and click OK.

The Permission entry for BFE window with Full Control selected

  1. Select the checkbox Replace all child object permission entries with inheritable permission entries from this object and click OK.

The Advanced security settings for BFE window with the Replace checkbox selected

  1. Click OK.
 

What to do if the Base Filtering Engine is not in the list of services or fails to run

If the Base Filtering Engine is not in the list of services, or if it failed to start, we recommend that you contact Microsoft technical support.
Source : Official Kaspersky Brand
Editor by : BEST Antivirus KBS Team

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