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#31
I removed Hyper V but that large folder remains. I've reinstated Hyper V since it's needed for Reflect viBoot. I just checked my vintage 2006 PC running v1803 and it doesn't have the folder C:\ProgramData\Microsoft\Windows\Containers nor has Application Guard or Hyper V ever been installed.
I've just checked my 1809 machine that does use Hyper-V (both for VMs and viBoot). It also has 'Windows Defender Application Guard' turned on, though I don't recall turning it on myself(a default, perhaps?). I also have that Containers folder, though mine is about 3GB.
Edit:
As it happens, I have another 1809 machine running Hyper-V. On that one 'Windows Defender Application Guard' has never been installed. That machine has no Containers folder, so it seems to just be used by Application Guard (looks like I must have chosen to install it on the first machine after all).
Last edited by Bree; 17 May 2019 at 11:11. Reason: 2nd screenshot
Then there appears to be no way of removing it naturally. Once Application Guard has touched the machine, that stuff is there in perpetuity. MS may not call that a bug, but it certainly is sloppy housecleaning. Unless any of you have a better trick or other solution.......delete the folders and be done. And the .reg entries if you wish.
That appears to be the case. I have now uninstalled Application Guard on my first machine but Containers remains unchanged.
I wouldn't try that. For a start, it's a non-trivial task....Unless any of you have a better trick or other solution.......delete the folders and be done.
...you need to take ownership first. Even then there are some files in BaseImages that cannot be deleted because they are in use. But after deleting as much as was allowed my Start menu stopped working in all user accounts, either by clicking on it or by pressing WinKey.
(now I'll have to restore it's Macrium image).
Thank you all for your help.
The conclusion is that once you have enabled Application Guard you are left with several GB of useless files in C:\ProgramData\Microsoft\Windows\Containers even after disabling Application Guard. There appears to be no safe way of deleting the files.
I'll file a feedback report and you never know Microsoft may get around to fixing their sloppy engineering.