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FIX: Kaspersky blocking or throttling VPN [NordVPN, Cisco]

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3. Disable scanning of encrypted connections

  1. Start Kaspersky, go to Settings, select Additional, click on Network and then disable Do not scan encrypted connections.
  2. Start Kaspersky, go to Settings, select Additional, click on Network and then disable Inject Script into web traffic to interact with web pages.
  3. Open Kaspersky, go to Settings, select Protection, click on Web-Antivirus settings, then select Advanced settings and disable Automatically activate Kaspersky Protection extension in browsers.
    • Prior to this, we recommend uninstalling the extension from the browser.

Some experienced users recommended disabling certain options in order to make the VPN work. One of the options which seemingly disrupts the VPN connectivity is Scanning of encrypted connections.

Also, disabling Inject Script into web traffic to interact with web pages and Automatically activate Kaspersky Protection extension in browsers options might help, as well.

If you’re not sure how to do so, we provided the steps for all 3 options above.


4. Upgrade or downgrade Kaspersky

First and foremost, make sure that you’re having the latest Kaspersky patch. If that’s the case, upgrading/downgrading seems applicable.

Furthermore, it seems that the version which broke VPN is Kaspersky 2017. Change the version of the antivirus, upgrading it or downgrading it in the process.

If you have a license key, you can install almost all Kaspersky versions, so have that in mind.

The important thing is to skip on the upgrade prompts (Settings > Additional >Update, and uncheck the option to download new versions).

What you’ll need to do is to keep hold of the license key and uninstall the current Kaspersky version.

After that, navigate to the official site and download the version you deem functional. If you relly on a VPN on a daily basis, you should probably consider this option.


5. Check TAP drivers

The affected VPN can have its share in this, even though Kaspersky is the main culprit. Namely, while waiting for the solution, some users meddled with the TAP adapter and its respective driver.

For some reason, they had a much better connection after rolling back the drivers. TAP adapter is an essential part of a VPN, so the relation is obvious.

Due to the apparent differences with every system (there are no 2 identically configured PCs), we can’t say with certainty whether this is a permanent solution. Nonetheless, it’s worth a try.


6. Reinstall the VPN

  1. In the Windows Search bar, type Control and open Control Panel from the list of results.
  2. From the Category view, click Uninstall a program under Programs.vpn blocked by kaspersky
  3. Right-click on your VPN solution and Uninstall it.
  4. Use IObit Uninstaller Pro (suggested) or any other third-party uninstaller to clean all remaining files and registry entries the VPN has made.
  5. Restart your PC.
  6. Download the latest version of the VPN of your choice and install it.

Finally, you can try and reinstall the affected VPN. By doing so, the application itself (VPN client) should reintegrate into the system shell.

And maybe the problem won’t persist after that. We recommend using a third-party uninstaller to clean all the remaining files and registry entries left behind.


If you still face antivirus compatibilities with your VPN, you can look at our list with the best antivirus that work best with VPNs.

Our solutions provided ways on how to disable Kaspersky and reenable the VPN. In case you have any questions or suggestions regarding the VPNs inability to work when paired with Kaspersky antivirus, feel free to tell us in the comments section below.

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This post was written by Aleksandar Ognjanovic and was first posted to WindowsReport

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