[SOLVED] Kaspersky Antivirus Fatal Error in Windows 11 - PCASTA

Antivirus software like Kaspersky protects your computer from harmful applications and other online threats. As a result, it guarantees secure online browsing and data security. The Kaspersky antivirus program must be installed on your computer as a result. Nonetheless, most users nowadays claim to be experiencing Kaspersky Antivirus Fatal Error in Windows 11.

You will find instructions on fixing fatal errors in Kaspersky on this page. To fix your Kaspersky fatal error problem, read this article in its entirety.

What are the primary reasons why Kaspersky Antivirus has fatal errors?

Kaspersky’s installation fatal error might occur for several reasons. Below is a list of a few of the causes:

1: Internet connection interruption when downloading Kaspersky. The Kaspersky antivirus program may not correctly download if the internet connection is interrupted.

2: If your computer’s drivers are out-of-date, installing Kaspersky antivirus software could not possible, which would result in the error.

How Do I Fix Kaspersky Antivirus Fatal Error?

The “Fatal Setup error” is the main interruption during the Kaspersky installation. This mostly happens due to poor backups, lost configuration information, unsuccessful registration of Windows registries, or the installation of Kaspersky Antivirus.

Solution 1: Verify the junction point pointing location

Follow these steps to verify the pointing location:

1: Start by bringing up the application window.

2: Next, choose the nation to join in the location drop-down list.

3: Next, you must choose the automatic option if you want the applications to select the best nation to establish a connection.

Solution 2: Fix Machine-Specific Issues

1: Start by performing a virus scan because it is clear that doing so is more efficient.

2: Update your software right now.

update settings

3: The next step is to reduce the bloat.

4: Test your Wi-Fi connection in step four.

5: The operating system should be reinstalled.

Solution 3: Use another software

Use the following instructions to utilize other software

1: You must purchase an antivirus code from a third party on the Kaspersky website.

2: At this point, you must enter the activation code into the Complete Security program.

3: The installer should then be downloaded from the Kaspersky website.

download and install the software - Kaspersky antivirus fatal error

4: Execute the installation now, then carry out the on-screen instructions.

5: Five: Restarting the computer is the last step.


Solution 4: To fix a fatal error in Kaspersky, uninstall any other antivirus software

To uninstall another antivirus, follow these instructions:

1: Choose the Control Panel from the Start menu.

control panel

2: Under the Applications category, select Uninstall a program.

uninstalla program in control panel - Kaspersky antivirus fatal error
uninstall a program in control panel

3: Next, choose Uninstall after choosing the antivirus program you wish to uninstall.

uninstall - Kaspersky antivirus fatal error

4: You must restart your computer when requested.


Solution 5: Reset Host Files to Default Settings

To restore host files to their default settings, use these instructions:

1: To begin, you must first open Notepad.

2: Now, you must utilize Cortana and click the Notepad icon to search for “Notepad.”

3: “The next step is to copy the following text and then paste it into the document.

  # Copyright (c) 1993-2006 Microsoft Corp. # # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. # # This file contains the mappings of IP addresses to host names. Each # entry should be kept on an individual line. The IP address should # be placed in the first column followed by the corresponding host name. # The IP address and the host name should be separated by at least one # space. # # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a ‘#’ symbol. # # For example: # # rhino.acme.com # source server # x.acme.com # x client host # localhost name resolution is handle within DNS itself. # localhost # ::1 localhost

4: Next, choose Save As from the File menu, enter “Hosts” in the File Name field, and save the file to the desktop.

5: At this point, you must shut Notepad.

6: The following step requires you to use Cortana to search for %WinDir%System32DriversEtc, after which you may choose the file folder.


7: Next, click or hold the Hosts file, choose Rename from the context menu, and give the file the new name “Hosts. old.”

8: The” Hosts file you prepared in the previous step must be copied or moved from your desktop to the%WinDir%System32DriversEtc folder.

etc - Kaspersky antivirus fatal error

9: You must choose to continue if you are asked to enter an administrator password at this point.

Solution 6: Verify Leftover Registry Keys

Here’s to check a leftover Registry key:

1: Use the Win+R keys on your keyboard to start the Run dialogue box.

2: Next, type “Regdit” and” press the Enter key.


3: After that, you should go to the outlined link inside the Registry editor window:

HKEY LOCAL MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

4: Next, you must expand the “Run” folder and look for the Registry key “avp**_post_uninstall.”

HKEY_LOCAL_MACHINE - Kaspersky antivirus fatal error

5: Here, you must select Delete by right-clicking the key, as mentioned earlier.

6: At this point, you can see if the problem still exists or not, and if not, move on to the next step.

Solution 7: Eliminate Old Installation Files

Follow these instructions to remove the files from an earlier installation:

1. Right-click the Start button first.

2. Secondly, select Search.

3. Type “Disc Clean-up.

4. Re-right-click on Disk clean-up.

Disk cleanup - Kaspersky antivirus fatal error

5: At step five, select Run as Administrator.

6: Click the drop-down arrows.

7: Next, select the drive where your Windows installation is located.

8: Afterward, click Ok.

select local disk - Kaspersky antivirus fatal error

Frequently Asked Questions  

Q1. Do you clear the cache on a computer?

Ans: Look for these steps to remove the cache on your computer:

1: First, select Apps or Application Management from the Settings menu.

2: Go to the All Tab now.

3: Next, locate and select your web browser from the list of installed programs.

4: Choose precise data, followed by the clean cache.

5: Close all open browser windows and then open them again.

Q2. How can you discover a means to obtain the Kaspersky password?

Ans: The following list includes several approaches to locate this method:

1: Start your computer in safe mode.

2: You must now launch the Registry editor.

3: Double-click Activate Password Protect and modify the value to 0 by clicking twice.

4: The value needs to be removed here.

5. Start the computer again.

Q3. How can installation errors be fixed?

Ans: The actions indicated below can help you fix installation issues:

1. Start by clicking.

2: Next, select Selective start-up and then uncheck the Load start-up items check box on the general tab.

3: After that, select Services, after which you must select hide all Microsoft services and select disable all.

4: Choose Restart after selecting ok.

5: Attempt to launch the software program installation now.

Final words

Hence, this article taught us how to fix Kaspersky antivirus fatal error by using troubleshooting techniques. You can try these steps to determine which best solves the problem. If this doesn’t work, you can speak with one of our knowledgeable specialists for assistance. Contact us immediately to use our hassle-free solutions to fix any antivirus issues.

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