How to Resolve Kaspersky Antivirus Error 27300 in Windows 10 PC



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Kaspersky is antivirus software that protects and safeguards your computer from malware and online threats. Thus, it provides safe surfing on the Internet. It also ensures data security. Therefore, you can install the Kaspersky antivirus program on your computer. However, most users report that they get error 27300 when they try to install the Kaspersky antivirus program.

What causes error 27300 in Kaspersky antivirus?

  • An outdated device driver.
  • Problems with the Internet connection.
  • Incomplete loading of the Kaspersky Anti-Virus program.
  • A conflict between the anti-virus and the Windows operating system.
  • Corrupt registry entries can also cause this problem.
  • Unwanted files can also cause this error, interfering with the installation process.

How to fix error 27300 with Kaspersky antivirus?



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Update your Windows 10 installation

  1. Open Windows settings by pressing the Windows + I keys.
  2. Click Updates and security.
  3. Click Check for updates.

Remove conflicting antivirus programs

  1. Press Ctrl+R on your keyboard to launch the launch window.
  2. Type “Appwiz.CPL” and press Enter.
  3. Find the conflicting antivirus program that you want to remove.
  4. Right-click on it and select Uninstall. You can also click Uninstall at the top of the list.
  5. Follow the instructions on the screen and complete the uninstallation of the product.
  6. If prompted, restart your computer.

Disable digital signature verification for drivers

  1. Click the Start menu, then click Power.
  2. Hold down the Shift key and click Restart.
  3. Wait for the restart to display the advanced boot menu.
  4. Press 7 or F7 when you are asked about boot mode.
  5. Your system will boot with digital signature verification disabled.

Rename the catroot2 folder

  1. Restart your computer while holding down the Shift key.
  2. Find the Start menu, right-click CMD, and select Run as administrator.
  3. Enter the following commands, one by one:
    net stop cryptsvc
    ren %systemroot%\system32\catroot2 catroot2_old
    net start cryptsvc
  4. Finally, reboot your computer.



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Frequently Asked Questions

  1. Create a restore point. If you are using Windows 10
  2. Make sure you have an activation code for your Kaspersky program.
  3. Delete files from previously installed versions of the product.

If after upgrading to Windows 10 the Kaspersky application can no longer be installed on your computer, it means that the application version was incompatible.

If your computer is infected, malicious programs may prevent installation of Kaspersky applications. The installation wizard does not start. The installation does not start after the installation file is executed. The installation wizard finishes before the application is installed.