Error "Some protection components are corrupted"

This article concerns:

• Kaspersky Basic, Standard, Plus
• Kaspersky Security Cloud
• Kaspersky Internet Security
• Kaspersky Anti-Virus
• Kaspersky Total Security
• Kaspersky Small Office Security

Issue

If you get the error "Some protection components are corrupted", then your Kaspersky application does not provide solid security for your data.

Solution

Reinstall the application:

1. Update antivirus databases and restart the computer. For instructions, see Online Help:
   • Kaspersky Security Cloud
   • Kaspersky Internet Security
   • Kaspersky Anti-Virus
   • Kaspersky Total Security
   • Kaspersky Small Office Security
2. If the database update didn't help, reinstall the application:
   1. Download the installer for:
      • Kaspersky Security Cloud
      • Kaspersky Internet Security
      • Kaspersky Anti-Virus
      • Kaspersky Total Security
      • Kaspersky Small Office Security
   2. Uninstall the application. In the Saving objects window, select the License information or Subscription information checkbox. For instructions, see this article.
   3. Restart the computer.
   4. Run the installer.
   5. Activate the application.

The Kaspersky application will be reinstalled.

What to do if the error persists

If the recommendations did not help or you experience difficulties during installation or removal, contact Kaspersky technical support by choosing the topic and filling out the form.