How to completely disable Windows Defender on Windows 10? There are several ways to disable Windows Defender on Windows 10, please see the detailed instructions below.

If you see Event ID: 7043, The Windows Security Service did not shut down properly after receiving a preshutdown control in Windows 11/10, see this post.

In a proof-of-concept, a security researcher demonstrated how the Windows Security Center API can be used to block the scans by Microsoft’s built-in antivirus tool.

A new tool called 'Defendnot' can disable Microsoft Defender on Windows devices by registering a fake antivirus product, even when no real AV is installed.