Windows 8 and 8.1 Forums


Defender won't open in windows 8

  1. #11


    Have you tried other antivirus software such as:
    Malwarebytes Anti-Malware
    Trend Micro Internet Security
    AVG Free Edition

    If any of the programs worked, then I recommend that you replace Windows Defender. Based on AV-TEST.org's recent lab tests, it showed that Windows Defender is less effective compared to 3rd-party applications.

      My System SpecsSystem Spec

  2. #12



    BSOD Kernel Dump Analyst
    Posts : 2,274
    Windows 10 Pro


    Malwarebytes isn't an AntiVirus program but an Anti-Malware program.
    Malwarebytes won't catch what an AntiVirus program does catch.

    @Alaskahsm, did you had any other AV programs installed?
      My System SpecsSystem Spec

  3. #13


    Quote Originally Posted by axe0 View Post
    Malwarebytes isn't an AntiVirus program but an Anti-Malware program.
    Malwarebytes won't catch what an AntiVirus program does catch.

    @Alaskahsm, did you had any other AV programs installed?
    This is a common misconception.

    'Malware' is an umbrella term used to refer to a variety of forms of hostile or intrusive software, including computer VIRUSES, worms, trojan horses,ransomware, spyware, adware, scareware, and other malicious programs. - Wikipedia
      My System SpecsSystem Spec

  4. #14



    BSOD Kernel Dump Analyst
    Posts : 2,274
    Windows 10 Pro


    That is the definition of malware, but Malwarebytes does only catch a really small group of it.
    For example, Malwarebytes doesn't catch worms, trojans etc.
      My System SpecsSystem Spec

  5. #15


    Quote Originally Posted by axe0 View Post
    That is the definition of malware, but Malwarebytes does only catch a really small group of it.
    For example, Malwarebytes doesn't catch worms, trojans etc.
    Let me quote Malwarebytes instead of Wikipedia:

    "Malwarebytes Anti-Malware's industry-leading scanner detects and removes malware like worms, Trojans, rootkits, rogues, spyware, and more." - Malwarebytes.org
      My System SpecsSystem Spec

  6. #16



    BSOD Kernel Dump Analyst
    Posts : 2,274
    Windows 10 Pro


    Quote Originally Posted by cipals15 View Post
    Quote Originally Posted by axe0 View Post
    That is the definition of malware, but Malwarebytes does only catch a really small group of it.
    For example, Malwarebytes doesn't catch worms, trojans etc.
    Let me quote Malwarebytes instead of Wikipedia:

    "Malwarebytes Anti-Malware's industry-leading scanner detects and removes malware like worms, Trojans, rootkits, rogues, spyware, and more." - Malwarebytes.org
    Please explain to me why, I had a trojan a few months ago, Malwarebytes didn't detect this trojan? Malwarebytes is build to prevent infections that are very new and doesn't yet get detected by AV programs.
    I did scan this trojan with virustotal, but Malwarebytes didn't detect this one even though it was very new.
      My System SpecsSystem Spec

  7. #17


    Quote Originally Posted by axe0 View Post
    Quote Originally Posted by cipals15 View Post
    Quote Originally Posted by axe0 View Post
    That is the definition of malware, but Malwarebytes does only catch a really small group of it.
    For example, Malwarebytes doesn't catch worms, trojans etc.
    Let me quote Malwarebytes instead of Wikipedia:

    "Malwarebytes Anti-Malware's industry-leading scanner detects and removes malware like worms, Trojans, rootkits, rogues, spyware, and more." - Malwarebytes.org
    Please explain to me why, I had a trojan a few months ago, Malwarebytes didn't detect this trojan? Malwarebytes is build to prevent infections that are very new and doesn't yet get detected by AV programs.
    I did scan this trojan with virustotal, but Malwarebytes didn't detect this one even though it was very new.
    To explain, i'll give 2 points:

    1. There are two versions of Malwarebytes Anti-Malware:

    a. Malwarebytes Anti-Malware Free does not have a real-time protection. It is only used for post-infection malware removal (meaning it is only useful once your computer is infected by a malware).
    b. Malwarebytes Anti-Malware Premium has a real-time protection which protects your computer from malware. It can block and remove malware automatically.

    2. Virus definitions is not updated / Malwarebytes has not discovered the malware yet

    Removal tools such as Malwarebytes Anti-Malware needs to have a database of malware information. If the malware is not yet on the database or heuristics engine, the malware will not be detected and removed from your computer.

    That's why, I also recommend other malware tools such as Trend Micro Internet Security and Avast Free Edition - both have real-time protection and constantly updated malware database.
      My System SpecsSystem Spec

  8. #18



    BSOD Kernel Dump Analyst
    Posts : 2,274
    Windows 10 Pro


    I have premium since a long time, updated definitions.
    Malwarebytes should then be capable of detecting it with its heuristics engine, but it didn't.
      My System SpecsSystem Spec

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