Windows 10: Windows Defender definition updates

Page 2 of 2 FirstFirst 12
  1.    02 Dec 2017 #11

    TairikuOkami said: View Post
    The latest definition for 10 x64 is 115MB, that includes installer, still.Latest definition updates for Windows Defender Antivirus
    This is the stand-alone package; very different from the delivery method employed by WU
      My ComputerSystem Spec

  2.    02 Dec 2017 #12

    Why are you downloading it separate from either Windows Update or Windows Defender Security Center>Virus&Threat>Protection Updates?
    If you're not using either of those two methods, your downloading like your pc already doesn't have Windows Defender.
    If that's the case you have nobody to blame, but yourself on your high data usage for Windows Defender.
      My ComputerSystem Spec


  3. Posts : 586
    Windows 10 Home x64 and Pro x86
       03 Dec 2017 #13

    PromU,

    The update download sizes identified by WU are often meaningless so you do need to measure it yourself if you want to find out the truth. You need to record your data usage both before and after an update to get a meaningful result - Control panel, Network & sharing centre, {click on the network's name next to the label Connections}, note the data used both before & after updating Windows defender manually through its UI. You need to hope that other network use does not occur while you are measuring or your results will be invalid.

    I have just done this on one FCU (x86) computer and the data used was 36MB [but on both a Ver 1703 (x64) computer as well as on another ver 1709 (x64) computer, it was only 2MB]. Perhaps a major change to definitions was required for a particular reason & the first computer had been slightly more out-of-date than the other two {they had all been updated at some stage yesterday}. I'm going to watch update sizes for a few days to check on this.

    Thanks for publishing this warning. I had not been bothering to monitor Windows defender update sizes for over a year.

    Of course, it could be worse. Bitdefender replaces entire application modules at every update [the minimum you can get away with in Bitdefender is 3GB a month for each computer and that is only by reducing updates to once a day].

    Denis
      My ComputerSystem Spec

  4.    11 Dec 2017 #14

    I use O&O Shutup10 to lock down everything, except Defender.
    And I stayed on Anniversary Update until last week, when I thought I'd better go for Fall Creators Update and my Mobile ISP gave lots of GBs as a Christmas Promotion.

    But now, Definition Updates are indeed sneaking through.
    And what else, Huh?

    After some extended searching, it seems System32/UsoClient.exe can have its permissions hobbled to give another way of stopping automatic Windows Updates and also Automatic Defender Definition Updates.

    See here - How To Install Windows 10 Updates Manually


    Make a backup copy of UsoClient.exe before messing with it. Just in case.

    The old style Defender Interface can also be found at "%ProgramFiles%\Windows Defender\MSASCui.exe"
    If you want to check updates that way.


    Happy Holidays
      My ComputerSystem Spec


  5. Posts : 586
    Windows 10 Home x64 and Pro x86
       14 Dec 2017 #15

    PromU,

    I just monitored my first [Ver 1709] WD update for three days and it was roughly 8MB i.e. about 2 1/2 ish MB a day.

    Incidentally, I also ran my first [Ver 1703] WD update for three days and it was roughly 9MB i.e. about 2 1/2 plus a little bit MB a day. I am not surprised that they are the same.

    [I'm not trying to suggest leaving it for three days is a good idea. I've been tied up on a non-internet task on both these computers so have hardly been connecting them at all.]

    Denis
      My ComputerSystem Spec

  6.    19 Dec 2017 #16

    Try3 said: View Post
    PromU,I just monitored my first [Ver 1709] WD update for three days and it was roughly 8MB i.e. about 2 1/2 ish MB a day.Incidentally, I also ran my first [Ver 1703] WD update for three days and it was roughly 9MB i.e. about 2 1/2 plus a little bit MB a day. I am not surprised that they are the same.[I'm not trying to suggest leaving it for three days is a good idea. I've been tied up on a non-internet task on both these computers so have hardly been connecting them at all.]Denis
    You're right...I just updated the definitions, after a 7 day lapse, and the download was just above 13mbs. Seems the most recent CU/Engine Update fixed the problem
      My ComputerSystem Spec


 
Page 2 of 2 FirstFirst 12

Related Threads
I have been getting the same update for days now and Not once have I gotten a "failed to update" message. The update is KB2267602. Why would I keep getting the same update over and over again with no fails?
Solved Scheduled Defender Definition Updates Not Completing After AU in AntiVirus, Firewalls and System Security
Going back to Windows 8 I have created a task to manually update Windows Defender definitions on a schedule. This is fairly straightforward as detailed here Auto update Windows Defender and here...
Windows Defender Definition-Failure in Windows Updates and Activation
Hi, something isn't right with my updates. The definition Update for Windows Defender - (KB2267602 1.217.1293.0) failed to install and is still sitting among my update alerts. However when I ran update from inside Windows Defender it successfully...
Not sure if it's just me, but for some reason, since the Jan 12 patch Tuesday, I no longer see definition updates for Windows Defender on Windows Update's "View your update history" page. Anyone else noticing this? I, for one, am happy about...
How to stop Updates of Windows Defender Definition in Windows Updates and Activation
I have disabled Window Defender, but the Updates of Windows Defender Definition are still downloaded and installed. How do I stop it? I tried to use the Show or Hide updates to hide the Update of Windows Defender Definition, but it did not...
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 19:47.
Find Us