1.    13 Jan 2016 #1
    Join Date : Aug 2015
    Posts : 20
    Windows 10 x64 build 10240

    Antivirus Downtime


    Occasionally, as one does, I change my antivirus vendor. Universally, the advice is that before changing, make certain you completely uninstall the old antivirus before reinstalling the new one. In most (if not all) cases, however, users must remain connected to the internet throughout the changeover process. This leads, as far as I understand it, to a five or six minute gap between the efficacy of the old antivirus and the efficacy of the new one. (One thing is for certain: if you disconnect at all during this period it might just be at that moment when connection is vital.)

    Is there any better advice out there as to how best avoid "antivirus downtime"
      My ComputerSystem Spec
  2.    13 Jan 2016 #2
    Join Date : Apr 2015
    Posts : 13,001
    W10Prox64

    Quote Originally Posted by Phrixos View Post
    Occasionally, as one does, I change my antivirus vendor. Universally, the advice is that before changing, make certain you completely uninstall the old antivirus before reinstalling the new one. In most (if not all) cases, however, users must remain connected to the internet throughout the changeover process. This leads, as far as I understand it, to a five or six minute gap between the efficacy of the old antivirus and the efficacy of the new one. (One thing is for certain: if you disconnect at all during this period it might just be at that moment when connection is vital.)

    Is there any better advice out there as to how best avoid "antivirus downtime"
    Here's what I do:
    Download the new AV installer. Uninstall the old AV. Reboot. Clean out the registry from any leftovers. Install the new AV. I stay connected to the internet the entire time.

    Assuming the old AV is *not* Defender, the uninstall of the old AV will put Defender back on the job. After the reboot, Windows Update can update the definitions for Defender. The new AV install will then disable Defender.

    If you are behind a router, you'll be fine; I wouldn't worry about the few minutes you are unprotected. Just be sure your system is completely clean of malware before doing the uninstall of the old AV. You could run an ESET Online Scan. Of course, you'll need to disable your current AV before running it.
      My ComputerSystem Spec
  3.    14 Jan 2016 #3
    Join Date : Aug 2015
    Posts : 20
    Windows 10 x64 build 10240
    Thread Starter

    "If you have a 3rd-party AV installed, it turns Defender off. It will be turned back on when you uninstall the 3rd-party AV."

    Hello again, simrick.

    We've only just now communicated on another thread concerning a closely related question. For the benefit of other viewers here I repeat the substance of your answer from there, and my reaction to it.


    "So, in the interval between uninstalling one AV and installing another, Windows Defender becomes active.

    THAT is a critical piece of info. Thank you!

    (You should get a job with Microsoft's design team.)"

    Thanks also, for the other details, which are well worthwhile.
      My ComputerSystem Spec
  4.    14 Jan 2016 #4
    Join Date : Apr 2015
    Posts : 13,001
    W10Prox64

    Cheers!
      My ComputerSystem Spec

 


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