Can't open or run Windows Defender

Discussion in 'Windows 11' started by reavenz, Aug 8, 2021.

  1. reavenz

    reavenz MDL Novice

    Aug 5, 2021
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  2. boyonthebus

    boyonthebus MDL Expert

    Sep 16, 2018
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    No it is not normal. You might want to reinstall.
     
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  3. kaljukass

    kaljukass MDL Guru

    Nov 26, 2012
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    No, this is not normal.
    You said you just installed ...
    But how, you didn't say that. Did you do a clean installation or upgrade? And if you updated, what and how.
    But quite likely you will need to do a new clean installation and You can keep only your files but You cannot keep any apps and settings.
    Now it mostly works only some minor bugs and problems, I mean 22000.120
     
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  4. reavenz

    reavenz MDL Novice

    Aug 5, 2021
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    I did an upgrade from Windows 10, with the Insider program. Nothing strange. I will reinstall anyways.

    Thank you!
     
  5. Enthousiast

    Enthousiast MDL Tester

    Oct 30, 2009
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    Was the original install you upgraded from chopped or "tweaked" in any way?
     
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  6. reavenz

    reavenz MDL Novice

    Aug 5, 2021
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    Installed it from Microsoft Update in Windows 10. I tried to reset Windows 11 installation but got error in all ways, so now I don't know what to do.

    I'm also trying to download an ISO from microsoft .com/en-us/software-download/windowsinsiderpreviewiso to do a clean install but the select box only shows Windows 10 builds, not 11.
     
  7. Enthousiast

    Enthousiast MDL Tester

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  8. reavenz

    reavenz MDL Novice

    Aug 5, 2021
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    #8 reavenz, Aug 9, 2021
    Last edited: Aug 9, 2021
    (OP)
    Thank you, I'm trying that now.

    EDIT: it seems like I just can't reinstall or reset Windows 11 installation because of this https :// techcommunity.microsoft.com/t5/windows-insider-program/windows-11-go-back-not-working-process1-initialization-failed/td-p/2617850

    "It does not seem to happen on machines updated from 22000.100 to 22000.120, but it showed up on every machine updated directly from Windows 10 to Windows 11 build 22000.120."