This problem mainly happens when the product key does not match the installed version of Windows. Other reasons can be damaged licensing files or problems in the Windows registry. In this article, we will discuss different solutions to solve this error.

1. Run an SFC Scan

This error may appear if the system files needed for Windows activation are corrupt or missing. Running an SFC (System File Checker) scan can help identify and repair these files.

2. Edit the Windows Registry

The Windows Registry controls many low-level settings of your operating system. If there is an issue with the activation keys, you can try editing the registry to see if it resolves the error.

3. Perform a Diagnostic Test Using the Error Checking Tool

If the error persists, you can perform a diagnostic test of your drive using the built-in Error Checking Tool. This tool scans for corrupted files, checks the hard disk for bad sectors, and fixes errors.

4. Restore Your Windows System

If the error still persists, you can try restoring your Windows system to a previous point when the error was not present. Keep in mind that any data added after the selected restore date will be lost.

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