Microsoft Defender (formerly “Windows Defender”) remains the default, built‑in antivirus and endpoint suite in Windows 10 and Windows 11 — and while turning it off is straightforward in the short term, modern Windows builds, tamper protections, and enterprise management have made permanent disables brittle, risky, and often unnecessary. This feature examines all supported and unsupported ways people try to disable Defender, what actually happens under the hood, practical step‑by‑step...