If the installation of a Kaspersky application fails with the error "The application was not installed. Your computer may be infected by viruses”, follow the recommendations below.
Scan your computer for viruses with Kaspersky Virus Removal Tool.
If you are using Windows 10:
A restore point for the local disk C in Windows 10 will be created.
If you use one of the earlier operating system versions, click the link to view the guide on the Microsoft support website:
After you create a restore point, make sure you have a 20-digit activation code for your Kaspersky Lab product. You will need to enter it after you reinstall the application.
The code contains Latin letters and numerals divided into four groups of 5 characters.
If you bought the product offline, you will see the activation code in the Quick Start Guide you find in the box.
If you bought the product online, the activation code will be in the email message from the online store.
If you lost the activation code, you can restore it. For instructions, see this this article.
This will remove a Kaspersky application from your computer completely. If you have several Kaspersky applications installed, remove them one at a time.
Try installing the Kaspersky application once again.
If the issue persists, contact Kaspersky technical support by choosing the topic and filling out the form.
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