Windows 10: Windows Defender Fails to start

Discus and support Windows Defender Fails to start in AntiVirus, Firewalls and System Security to solve the problem; Hi, now i have a new problem and i don't know how to fix it. So yesterday i've noticed that windows Defender wasn't working and i've been trying to... Discussion in 'AntiVirus, Firewalls and System Security' started by Darkangel502, Feb 11, 2021.

  1. Windows Defender Fails to start


    Hi, now i have a new problem and i don't know how to fix it.

    So yesterday i've noticed that windows Defender wasn't working and i've been trying to search for solutions and none of them work, all it tells me is ''Unexpected error. Sorry, we ran into a problem. Please try again.''


    I really need help :



    I'm on windows 10 btw

    :)
     
    Darkangel502, Feb 11, 2021
    #1

  2. Windows Defender Fails Malware Test

    Naw... I'll just stick by Windows Server 2003 SP #1 fully hotfix patched (& current on that note), for now @ least, & doing what I do, to get THIS kind of security analysis score:


    Windows Defender Fails to start APKBelarcAdvisor5of10ScoreBETTERThan417Before.jpg


    I never suck in virus' either! The 2 the times I thought I did, the past 15 years now? They were my own fault (running 2 antivirus once, & another I don't know WHAT caused it, or I can't recall specifics anymore) in "false positives"!

    Ever since I started implementing a BOAT LOAD of things ANYONE can do, if they take 45 min. - 1 hr. running, or doing:

    • BELARC advisor
    • Using some security & speed oriented .reg file hacks
    • gpedit.msc (altering various policies for better security)
    • secpol.msc (hardening default security policies)
    • lusrmgr.msc (hardening default userrights)
    • regedit.exe (registry hive ACL rights)
    • explorer.exe (NTFS rights)
    • Turning off java/javascript & ActiveX/ActiveScripting in browsers
    • Using Tcp/IP ports filtrating (easy to do in IP properties)
    • Turning off Services I do NOT use that may have holes
    • AntiVirus (AntiVir, NOD32, AVG, or Norton Corporate 10.2 edition (my favs @ least - I keep 1 resident, & one other as a 2nd opinion))
    • AntiSpyware program (I like AdAware & SpyBot + use both, 2nd opinion stuff again)
    • SEVERAL AntiRootkit programs (GMER, AVG, BitDefender, BlackLight, Rootkit Buster, Rootkit Revealer, AntiRootKit, Rootkit Hook Analyzer, Sophos - all many doctors opinions from what I feel IS the biggest threat out there now, rootkits)
    • + using a hardware NAT firewall in combination w/ a software firewall (ZoneAlarm used to be good, & the native Windows firewall isn't bad, except for noting outgoing packets)
    • Keeping up on Microsoft security patches to the OS & programs from them I use
    • Being SMART about not opening email attachments & also using TEXT or RTF as my email reading format too
    • After trimming services I do NOT use (& even the ones I don't as well, set disabled or not), I secure them ALL, per this thread:
    Securing Windows 2000/XP/Server 2003 services HOW TO

    • Using adbanner blocking HOSTS files (adbanners have been found to hold malicious code more than a few times the past 4-5 years now mind you)
    *HARD TO BELIEVE ON THAT NOTE OF ADBANNERS HOUSING MALWARES IN SCRIPT & MORE?

    CHECK THIS, DATED TODAY 02/21/2007:

    Microsoft apologises for serving malware

    APC's February issue is on sale now! | TechRadar

    *Smile Windows Defender Fails to start :)

    * YOU DO ALL OF THAT? Yes, You CAN be safe online & use Windows, just takes a bit of work... 1 hr. implementing it all, & maybe another 1/2 hr. testing it (like when you secure services - I did a BIG list, but not every possible service under the sun, because I have not run them ALL!)

    MS ships their Operating Systems 'generic' enough to run on anything FULL FUNCTION, right outta the box... this can be its 'problem' too!

    APK

    P.S.=> Funny thing is though, I don't think we'll EVER be "110% solid secure" unless we go OFFLINE... @ least not for another 5 yrs. or so & then I think we'll be REALLY close @ least!

    Microsoft's taking the RIGHT steps, in the RIGHT direction in their apps & OS, & so are other vendors too... this is a GREAT trend!

    Heck - funny thing is? Snort turned up a security hole the other day... a program you CAN use to defend yourself... mistakes & oversights get made is all, still now even.

    Today? It's the "Wild West" still, not as bad as it used to be in the earlier days/decades, but still 'risky' to an extent... still in the Stone Age guys, you'll miss these days, when they are gone... apk
     
    Alec§taar, Feb 11, 2021
    #2
  3. window defender


        • You will want to print these instructions for offline reference -
    IMPORTANT => DON'T SKIP ANY STEP perform all Steps in one uninterrupted session - If a Step says to reboot
    reboot.

    Problems starting Windows Defender in Windows 8/8.1/10

    Pləase let us know what fixes the problem or if the pяoblem remains.


        • `~`
     
    José Antonio Pontón Posada CEO, Feb 11, 2021
    #3
  4. Jay Jap Win User

    Windows Defender Fails to start

    Windows Defender Anitvirus

    Hello,

    There are multiple reasons why you are having issues, enabling Windows Defender. To assist you with your concern, you can refer to
    PrashantKumar96's
    Forum Article
    on how to fix Windows Defender not starting.

    We suggest that you try the troubleshooting steps listed there, especially the number six troubleshooting step.

    Let us know of the outcome.

    Regards.
     
    Jay Jap, Feb 11, 2021
    #4
Thema:

Windows Defender Fails to start

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