An error occurs during the database update. In the Detailed Reports window, the update status appears as "Not all components were updated" or there is an "Error updating components" message in the update list.

The "Not all components were updated" error in the database update window

Reason

There are several possible reasons for the issue:

Kaspersky application or server malfunctions
Power interruption during the database update
Use of a caching proxy server
A third party application conflict on the computer

Solution

Try launching the database update again. If you encounter the same error, reinstall the application. To do so:

Download the installation package from the Kaspersky website:
- Kaspersky Internet Security
- Kaspersky Anti-Virus
- Kaspersky Total Security
- Kaspersky Security Cloud — Family , Personal or Free
- Kaspersky Small Office Security.
For instructions on how to find out what application is installed on your computer, see this article.
Uninstall the current version of the application. See this article for instructions. To retain your current license, select the License information check box in the Saving objects window when uninstalling the application.
Restart your computer.
Run the installation file and follow the installation instructions:
The information about the active license will be loaded automatically. If the license information is not added automatically, activate the application. For instruction on how to activate a Kaspersky application, see:

The application will be reinstalled and work-ready.

What to do if the error persists

If the solution did not work, submit a request with a detailed description of the issue to Kaspersky technical support:

Through My Kaspersky in case you use Kaspersky Internet Security, Kaspersky Anti-Virus, Kaspersky Total Security, and Kaspersky Security Cloud. See the Online Help page for instructions.
Through Kaspersky Small Office Security Management Console in case you use Kaspersky Small Office Security. See the Online Help page for instructions.