If Windows Security (Microsoft Defender) throws Error 8024402f, Protection definition update failed on Windows 11, then follow this post to successfully fix the issue. Several users have complained of receiving the error code 8024402f while installing security signatures updates on Windows Security or Windows Defender.
Here are the methods to fix the error 8024402f when installing new security updates on Windows 11/10:
1]Ensure you have enough space
2]Set the correct date & time
3]Temporarily disable the Windows Update service
4]Make sure that Windows Security is enabled
5]Make sure that every dependency is enabled
6]Perform a clean install or repair install
Timecodes:
0:00 Intro
0:27 Ensure you have enough space
0:33 Set correct Date & Time on your system
0:57 Temporarily disable Windows Update service
1:30 Perform Clean Install
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