“Invalid file error” or “License problem detected” is one of the common errors experienced by many users. If you are also encountering this error, scroll down this page to know how to fix Kaspersky’s invalid file error.
Step 1: Kaspersky’s invalid file error occurs due to the incomplete installation of the antivirus database or because of any problem that occurs while installing the software.
reinstall and reactive the Kaspersky antivirus
Solution
Step 1: To fix this error, reinstall and reactive the Kaspersky antivirus software on your computer. The following instructions explain the same.
NOTE: The instructions given below are suitable only for Windows computers.
How Can I Fix An ''invalid Key File Error''
Step 1: Removing or uninstalling the existing Kaspersky software
You can uninstall the Kaspersky software from your Windows computer from the Programs and Features screen or using the Kaspersky application removal tool.
Using the Programs & Features screen
Step 1: Open the Programs & Features screen.
Step 2: Select the Kaspersky antivirus software from the list of programs.
Step 3: Click on the Uninstall/Change button.
UNINSTALL KASPERSKY Antivirus
Step 4: Now, a pop-up dialog box titled Kaspersky will appear on the screen.
Step 5: In the opened dialog box, type the security key of your Kaspersky application.
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