Windows 10: Windows Defender definition updates

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  1.    01 Dec 2017 #1

    Windows Defender definition updates


    Has anyone else noticed that the size of the daily definition download has dramatically increased? Prior to FCU the average size for me was under 1mb, now it has balloned to just under 30mb. This is of course downloading via Windows Update.Is this some kind of unusual quirk with my machine, or has definition delivery radically changed with FCU?
      My ComputerSystem Spec


  2. Posts : 324
    Windows 10 Home 64-bit Edition
       01 Dec 2017 #2

    I don't know about the size of the download, But I can look in Defenders and see when it update definition, ran health scan. run a manual update later in the afternoon, be another definition, do another manual update around 8:30pm and there is another definition.
      My ComputersSystem Spec

  3.    01 Dec 2017 #3

    Windows Defender gets 2 or more updates a day.
    On Saturday & Sunday, it's usually just one update.
    Not sure on the size of each, but the download is fast on my end.
      My ComputerSystem Spec

  4.    01 Dec 2017 #4

    BRKKAB said: View Post
    Windows Defender gets 2 or more updates a day.On Saturday & Sunday, it's usually just one update.Not sure on the size of each, but the download is fast on my end.
    I'm on a metered connection so I can see the size prior to downloading. I was also accustomed to two downloads per day, each been well under 1mb. All that has changed with FCU. I can't understand why it would require a file of that size on a daily basis. Data is fairly limited and very expensive for me at the moment, so I might have to abandon WD for a more reasonable solution if this continues
      My ComputerSystem Spec


  5. Posts : 324
    Windows 10 Home 64-bit Edition
       01 Dec 2017 #5

    Not sure, I believe any AV would run up your data use on metered.
      My ComputersSystem Spec


  6. Posts : 324
    Windows 10 Home 64-bit Edition
       01 Dec 2017 #6

    I use to use one of those air cards from AT&T, it had a 5GB monthly data plan. no roll over, several times I used more than 5GB, paid extra too. I had Norton AV.
      My ComputersSystem Spec

  7.    02 Dec 2017 #7

    Yeah, I sure don't complain about the size of downloads for my security.
    If he/she had paid av protection the updates would happen 5+ time a day.
    Better question is would you rather be protected or would you rather be infected with malware and have your stuff stolen ?
      My ComputerSystem Spec


  • Posts : 3,210
    10.5 Home 1803 x64
       02 Dec 2017 #8

    You could try cloud AV, which does not download updates, but checks everything online.

    Not sure, how much bandwidth would that take, but it sure would be interesting to see.

    Like Panda or McAfee
      My ComputerSystem Spec

  •    02 Dec 2017 #9

    BRKKAB said: View Post
    Yeah, I sure don't complain about the size of downloads for my security.If he/she had paid av protection the updates would happen 5 time a day.Better question is would you rather be protected or would you rather be infected with malware and have your stuff stolen ?
    You don't seem to understand the underlying issue. It's not a question of been averse, per se, to downloading a file of that size. Windows Update is designed to download incremental updates: only that portion of a file that has changed over a given time period. Whilst previous file sizes of under 1mb would suggest a modest addition of new definitions, to combat new threats, a file of 30mbs would suggest a huge amount of new definitions on a daily basis; that scenario is not credible. I'm thinking that something has gone awry with the process since FCU.
      My ComputerSystem Spec


  • Posts : 3,210
    10.5 Home 1803 x64
       02 Dec 2017 #10

    PromU said: View Post
    I'm thinking that something has gone awry with the process since FCU.
    The latest definition for 10 x64 is 115MB, that includes installer, still.

    Latest definition updates for Windows Defender Antivirus
      My ComputerSystem Spec


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