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How To Fix Kaspersky Fatal Error 27300?

Kaspersky is one of the antivirus programs that can help detect and remove the virus from your PC. It also prevents your PC from being infected by malware or viruses and enhances your productivity. Users face the Kaspersky error 27300 while installing or updating the software. It occurs due to Internet connection disruption, improper installation of the antivirus software, errors in settings, etc. But it can be solved by performing a simple troubleshooting process. Let us see how to fix the Kaspersky fatal error 27300.

Uninstall the incompatible application

Make sure that no application running in the background is stopping the Kaspersky antivirus software. If it stops or plays a major part in the occurrence of this error, uninstall the software. To find the software that interrupts the Kaspersky antivirus programs, follow these steps:

  • Go to the Windows Task Manager by pressing and holding the Ctrl + Shift + Esc keys simultaneously.
  • Click on the Application tab, select the application that is running, and click End task.
  • Perform this task for each application and if you find any error while ending the task on any application, uninstall that application from your computer.
Kaspersky fatal Error 27300

Steps to clear reports on Kaspersky:

Sometimes it is unable to clear the disinfected files as per Kaspersky rules. The file will be locked or moved to the quarantine area; only clearing the reports will help you to solve any issue that has occurred in Kaspersky. Let’s see how to clear reports in Kaspersky.

  • Launch the Kaspersky app on your Windows computer.
  • In the right corner of the window, below Advanced settings , click Reports and Storages.  
  • In the Report parameters section, click the Delete reports button.
  • Now, the Clearing reports window opens.
  • In the Clearing reports window, select the checkbox to delete information.
  • Click All Reports, then click OK , and it will clear all Kaspersky reports.
  • When you select All reports, the entire data from the General protection report, Scan report, Update task report, Firewall report, Data encryption report, and control components report will be deleted.
  • Now, restart your computer and then check if this error occurs again in Kaspersky.

Steps to clear browsing history:

Clearing the browser history will fix the Kaspersky fatal Error 27300 issue on your computer.

  • If you are using the Chrome browser, launch the browser.
  • Click the Horizontal line  icon located in the top right corner and then click Settings .
  • On the Settings menu screen, scroll down and click Clear browsing data below the Privacy and security section.
  • Next, select the Advanced tab and then select the checkbox for Browsing history, Download history, other site data, Cookies, and Cached images and files. Now, click clear data .
  • If you want to reset the browser settings, scroll down on the Settings page and then click Advanced .
  • Below the Reset settings section, click Restore settings to their original defaults .
  • If you see a confirmation prompt, click Reset settings. Make sure the checkbox on the screen is selected.
  • Now, restart the computer and check this issue is cleared. Now we have learned how to fix Kaspersky Fatal Error 27300