Thanks - yes I went through that cycle when I first found it, as I was trying to figure out how to increase the size - which I found - it's another powercfg /h parameter.
But, having created a hiberfil.sys that way, it then deleted it the next day.
Plus I'd have to be unlucky for hiberfil.sys on 2 separate machines to be corrupted within the same day or two.
I expect it will go away when I upgrade in any case.
The hibefil.sys doesn't delete itself, nor does Windows delete it normally. I suspect it's down to the Update Assistant, did you look at removing it using the steps in this post as I suggested earlier?
Block Windows 10 update assistant/all updates
Yes it's been a busy day so I'll look into that in the morning.
The alternative on one of the machines (and it's a while since I've done this so haven't checked this will still work?) is to use UUP to ISO in a VM to make an ISO and clean-install the latest Insider build of 1803, which I believe is in the narrow window where I can exit Insider Builds. Although I know it's not quite the same as an official MCT ISO, I'm tempted to risk it, as with the extra 2 days holiday this weekend I've more time to re-install the software and sort out any issues.
Either way, my first step is that I'm doing a full Macrium image of that machine which should serve me well whatever else I do next- so that's running now.
But I'm also wondering how widespread this is, which is partly why I started the thread. If it affected 2 machines I use in close succession, I'll bet I'm not the only one seeing this.
Just reporting back that I have tried the steps in that post, but the Hiberfil.sys has once again disappeared.
The Windows 10 Upgrade Assistant hasn't come back into Programs and Features yet though, so it's perhaps something before that in the process. If I look in Settings, it says it's tried to install the Feature Update to 1709 again but it needs me to Fix Issues.
On extra thing I did was to Reset Windows Update (as per Shawn's Tutorial) which perhaps was a mistake as it perhaps made it start again with the 1709 Feature Update.
If you want to wait for 1803, then you can hide the 'Feature Update to Windows 10, version 1709'.
Hide or Show Windows Updates in Windows 10
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