Windows 10: Anniversary update clears event log, known behavior? Solved

  1. Posts : 4
    Windows 10 Pro x64
       18 Aug 2016 #1

    Anniversary update clears event log, known behavior?


    I noticed that during installation of the anniversary update Windows 10 completely cleared the event log (along with the list of installed updates).

    Is that a known behavior?

    Thanks in advance for feedback!
    Last edited by Loc2262; 18 Aug 2016 at 04:19.
      My ComputerSystem Spec

  2. Posts : 3,474
    64bit Win 10 Pro ver 1803 Build 17134.165 and W10 Insider Build 17713
       18 Aug 2016 #2

    Hello Loc2262 and welcome to TenForums :)

    Yes this is normal behaviour, in effect the Anniversary update is a new installation so all the events log are newly created. The old logs will be found in the Windows.old directory which remains in place for about 10 days so that you can revert to the previous version if you so wish.

    After about 10 days Microsoft assumes you will want to keep the update and so it deletes all the old files and recovers the disk space for you.
      My ComputersSystem Spec

  3. Posts : 4
    Windows 10 Pro x64
    Thread Starter
       18 Aug 2016 #3

    Hello Phil and thanks for your extensive reply!

    Roger that, good to know it's expected. I was thinking it might be something like that, considering also the update history list gets cleared (which Google results already implied to be expected).

    The "Windows.old" is already gone; it's been more than 10 days. But that's no problem; knowing not to trust MS updates, I took an Acronis backup right before I installed the Anniversary.

    Thanks again! (There's no "kudos" button on this forum, is there?)
      My ComputerSystem Spec

  4. Posts : 3,474
    64bit Win 10 Pro ver 1803 Build 17134.165 and W10 Insider Build 17713
       18 Aug 2016 #4

    You are welcome. You can read about the reputation system we use here: Reputation and Badges
      My ComputersSystem Spec

  5. Posts : 4
    Windows 10 Pro x64
    Thread Starter
       18 Aug 2016 #5

    Aah okay, I found the "thumbs up" Icon to add to your reputation now. :)
      My ComputerSystem Spec


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