hello people, thanks for this all info but windows managed to bring it back after preview update. Thanks for the replys.
After i updated windows 10 to windows 11 my windows defender got deleted.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(275.2, 86%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
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Hello, i updated my windows 10 to 11 and after it i saw that my windows defender got deleted, i coudnt run from any command and even powershell commands didnt recover it. Please help me to get it back without reinstalling windows if possible.
Windows for home | Windows 11 | Windows update
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(204.8, 96%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3END%3C/text%3E%3C/svg%3E)
Neil D 32,925 Reputation points Volunteer Moderator2026-02-27T19:48:45.0233333+00:00 Windows 11 has a repair option in Recovery.
Settings > System > Recovery > Fix problems using windows update, then select Reinstall now.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(150.4, 63%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHG%3C/text%3E%3C/svg%3E)
HARDCORE GAMES™ 190 Reputation points2026-02-27T18:56:47.66+00:00 I suggest a clean install of Windows11
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David-M 111.6K Reputation points Independent Advisor2026-02-27T17:17:07.98+00:00 Hi. I'm David, and I'm happy to help you.
To give you a solution that actually works and avoid wasting your time repeating what you've already tried: what were the exact commands you ran in PowerShell, and what error message appeared (or did it simply not return any response)?
Also. What is the current "OS Build" of your Windows 11?
- Press "Windows + R", type
winver, and click OK.
If you prefer, share a screenshot. Use the shortcut "Windows + Shift + S" to use the screenshot tool.
Be sure to censor your email address if it appears. The Microsoft Q&A is public.
I await your reply.
- Press "Windows + R", type