windows defender security center dosn't start correctly

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  1. Posts : 279
    21H1 (OS Build 19043.1081)
       #1

    windows defender security center dosn't start correctly


    when i try to open the security center i get the window but then it takes a couple seconds and then just closes reliability center says there is a problem as well, i ran SFC and DISM and they both say nothing is wrong i also attempted a restore but that froze so i powered down and now i'm looking here for some help.

    Many Thanks
      My Computer


  2. Posts : 279
    21H1 (OS Build 19043.1081)
    Thread Starter
       #2

    Sorry for this my Bust i looked in the all apps list and opened it from there but still it dosn't open from the updates area where it's listed as well?

    not sure if there is a real issue now

    DME

    if someone knows why it dosn't open from the check for updates screen please let me know

    Many Thanks
      My Computer


  3. Posts : 1,026
    Win10 Version 21H2 19044.1645
       #3

    i also attempted a restore but that froze

    Run SFC Command in Windows 10

    If System Restore does not work, run SFC/Scannow for corrupt files. You may need to restore at a later date.
      My Computer


  4. Posts : 5,443
    Windows 11 Home
       #4

    Do you have any security software installed?

    dmesal said:
    reliability center says there is a problem as well
    Does it report any error code number?
      My Computer


  5. Posts : 279
    21H1 (OS Build 19043.1081)
    Thread Starter
       #5

    this is what reliability reports for the error

    DescriptionFaulting Application Path: C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exeProblem signatureProblem Event Name: MoAppCrashPackage Full Name: Microsoft.Windows.SecHealthUI_10.0.16299.15_neutral__cw5n1h2txyewyApplication Name: praid:SecHealthUIApplication Version: 10.0.16299.15Application Timestamp: 59cda931Fault Module Name: combase.dllFault Module Version: 10.0.16299.15Fault Module Timestamp: 3db461b4Exception Code: 802b000aException Offset: 00000000000a50e6OS Version: 10.0.16299.2.0.0.768.101Locale ID: 1033Additional Information 1: 297aAdditional Information 2: 297aa6212209f4190b0891ddb087ca2bAdditional Information 3: 90e9Additional Information 4: 90e90623fb032c0163da83d233e1320cExtra information about the problemBucket ID: bdb6e9ebb29ed74bfbd84eac480411c9 (133557818409)

    hope this helps
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  6. Posts : 31,474
    10 Home x64 (22H2) (10 Pro on 2nd pc)
       #6

    Are you using a High Contrast mode?

    A rather surprising fix for a similar problem here...

    ... Was fine before the Fall Creator's Update. sfc found no problem.
    Faulting application name: SecHealthUI.exe...

    ...High-contrast mode causes Windows Defenders to not work. Switch to a HC mode. Bring up Settings. Update & Security..., Windows Defender, then press the Open Windows Defender Security Center button. An empty window frame appears for a few seconds, then goes away...
    https://answers.microsoft.com/en-us/...f71841e?auth=1

    I've tried it and High Contrast #1 and #2 seem to cause Defender problems, the others seem to be OK.
      My Computers


  7. Posts : 279
    21H1 (OS Build 19043.1081)
    Thread Starter
       #7

    Good Day Bree

    yes i have high contrast on, so i have to loose my visual settings for Defender to work properly?
    i still have to read what you referenced.

    many thanks i'll check it out now

    DME
      My Computer


  8. Posts : 31,474
    10 Home x64 (22H2) (10 Pro on 2nd pc)
       #8

    dmesal said:
    yes i have high contrast on, so i have to loose my visual settings for Defender to work properly?
    I found on testing that the High Contrast Black and High Contrast White themes worked, #1 and #2 didn't. As this appear to be a bug, it may get fixed in a cumulative update and you could switch back to your preferred theme.
      My Computers


  9. Posts : 279
    21H1 (OS Build 19043.1081)
    Thread Starter
       #9

    so i have to loose HC 1 & 2 but still use HC with no frills ?

    DME
      My Computer


  10. Posts : 279
    21H1 (OS Build 19043.1081)
    Thread Starter
       #10

    Good Day All

    i just adjusted my HC settings and the security center came up properly. so the next question is once i get security center (defender) set up the way i like, can i revert back to my normal setting and defender will still do it's job?

    i guess trial and error time (beta testing)

    DME
      My Computer


 

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