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Get an app to open this "Windowsdefender" link

Anonymous
2025-04-05T08:05:41+00:00

so basically after i've used windows 10 for a bit I've decided to go back to windows 11 since why not at the time i was using windows 10 i used ReviOS then i upgraded to windows 11 from the windows 11 assistant or something (it's full factory reset) now i see windows defender GONE like Earased from existence!, it might be because i've used reviOS before and didn't correctly factory reset my pc unfortunately, and i Sadly do not know how to fix it so i've came here :D (i've tried to screenshot and it failed so idk if a imgur link is against the Microsoft TOS or something) https://imgur.com/a/rcLDdH0

Windows for home | Windows 11 | Settings

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  1. Anonymous
    2025-04-05T10:37:21+00:00

    here is the editor (sorry if i sent too much

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  2. DaveM121 880.8K Reputation points Independent Advisor
    2025-04-05T10:44:24+00:00

    Thank you for the screenshot, there is no problem indicated there.

    Click your Start Button, then just type Powershell and on the resulting list, right click PowerShell and select 'Run as Administrator'.

    Paste this command into Powershell and press Enter:

    Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage

    When that completes, paste this command into Powershell and press Enter:

    Add-AppxPackage -Register -DisableDevelopmentMode "C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\AppXManifest.xml"

    Close PowerShell and restart (not shut down) your PC

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  3. DaveM121 880.8K Reputation points Independent Advisor
    2025-04-05T10:31:51+00:00

    Click your Start Button, type regedit and hit Enter to open the Registry Editor.

    Click View and make sure 'Address Bar' is turned on.

    Paste this into the Address Bar at the top and hit Enter.

    HKLM\SOFTWARE\Policies\Microsoft\Windows Defender

    Please provide a screenshot of that Registry Editor page.

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  4. Anonymous
    2025-04-05T10:30:48+00:00

    Hey Dave so I've tried doing the fix you've provided me but it didn't seem to work or do anything at all unfortunately, i might try re-installing windows 11

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  5. DaveM121 880.8K Reputation points Independent Advisor
    2025-04-05T08:40:05+00:00

    Hi, I am Dave, I will help you with this.

    The best option is to perform an in-place repair with the Windows 11 ISO.

    Please follow the steps, this is then not like re-installing Windows, it is just like an update and your personal files, settings and installed software will not be affected.

    Click this link:

    https://www.microsoft.com/software-download/win...

    to download the Windows 11 ISO

    When the ISO file completes downloading

    Disconnect from the Internet

    Disconnect all external devices with the exception of a mouse or keyboard.

    Temporarily disable any 3rd party Anti-virus you may have installed

    Then, in Windows File Explorer, double click the ISO and then run Setup.exe and select the Install option.

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