[OpenAFS] OpenAFS installation messes up Windows 8 file access control
Thu, 19 Sep 2013 01:17:09 +0100
Jeffrey Altman <firstname.lastname@example.org> wrote on 16 September =
> if you are experiencing undesirable behavior on paths located in the =
> name space then the afs redirectorcan be involved. if the path is =
> disk or CIFS then the redirector cannot b The Windows Multiple UNC
> provider simply will not send those file system operations to the afs
> file system.
Yes, the problem is on my local disk (eg. C:\Program Files). It's just =
the installation of OpenAFS that provokes it.
> i can certainly believe that the explorer shell has bugs that are
> triggered by the mere existence of a non Microsoft file system. The
> explorer shell has a lot of hard coded assumptions that require NTFS =
> CIFS. this is part of the reason that their new ReFS file system is =
> supported on client systems.
If the installer isn't messing with Explorer's permissions settings, =
then the presence of the OpenAFS IFS does sound like the likely =
"culprit" for provoking an Explorer bug. I have installed some other IFS =
systems on my machine, but it looks like only OpenAFS causes the =
Can I test this by uninstalling or disabling the OpenAFS IFS alone? I =
can switch off all the OpenAFS programs (with autoruns and the Services =
control panel), but the problem remains. It takes a full OpenAFS =
uninstall to cure it. It would narrow down the problem if I can disable =
or uninstall just the IFS and check if that is the crucial step.
> it is also possible that another file system filter installed on the
> machine is altering the return code which prevents user account =
> from be triggered. however, it sounds like the real problem is that
> the explorer shell thinks the volume you are working on is readonly =
> therefore decides to hide the UI controls.
The symptoms are a little different from a read-only device. For =
example, the delete button is not greyed out, and attempting to delete a =
file still brings up the "are you sure you want to move this to the =
recycle bin" prompt (if delete prompts are enabled) before silently =
failing. I just checked with a read-only SD card and the behaviour is =
> this would be an explorer shell bug which must be addressed by =
That does seem likely, but how to get them to do so? Tracking down a =
more specific cause would probably help. I don't know the best forum/way =
to report a Windows bug.
If it's not some combination of things on my specific system, then =
everyone who installs OpenAFS on Windows 8 (64 bit? Standard Edition?) =
will hit this really annoying problem. Is it just me? Does anyone else =
here see it? I was "lucky" to spot that it appeared when I installed =
OpenAFS; many people might not. I'm planning on upgrading to Windows 8 =
Pro, so I hope soon to see if the issue is specific to the Standard =
> Jeffrey Altman
> On 9/15/2013 10:03 PM, Tim Adye wrote:
> > Hi Jeffrey,
> > Thanks for the information.
> >> The only interaction between OpenAFS and the Explorer Shell is the =
> >> Shell Extension" which provides the "AFS Context Menu", the "AFS
> >> Property Sheets", and "Mount Point and Symlink Overlay Icons". =
> >> the functionality you would have disabled using "autoruns".
> > Yes, I tried disabling all of those, but that didn't help.
> > If, as you suggest, it isn't OpenAFS running, then there must be
> something that the OpenAFS installer and uninstaller do to affect =
> Explorer. I installed and uninstalled OpenAFS many times (often with =
> other action except for the reboot) and the problematic behaviour I
> described appeared if, and only if, OpenAFS was installed (whether =
> or not).
> > Could there be some local policy or groups that are changed by the
> installer? I know that it adds the "AFS Client Admins" group, though =
> can't be it as the uninstaller doesn't remove the group.
> > Thanks,
> > Tim.
> > -----Original Message-----
> > From: Jeffrey Altman [mailto:email@example.com]
> > Sent: 15 September 2013 23:35
> > To: Adye, Tim (STFC,RAL,PPD)
> > Cc: firstname.lastname@example.org
> > Subject: Re: [OpenAFS] OpenAFS installation messes up Windows 8 file
> access control
> > Tim,
> > I'm sorry you are experiencing a problem but the reason you didn't =
> > any changes that were made by OpenAFS is because OpenAFS doesn't =
> > any changes.
> > The only interaction between OpenAFS and the Explorer Shell is the =
> > Shell Extension" which provides the "AFS Context Menu", the "AFS
> > Property Sheets", and "Mount Point and Symlink Overlay Icons". This =
> > the functionality you would have disabled using "autoruns".
> > Jeffrey Altman
> > On 9/15/2013 4:08 PM, Tim Adye wrote:
> >> Hi,
> >> The OpenAFS client installation is doing something nasty to the =
> >> control on my Windows 8 system. After installing OpenAFS, I can no
> >> move, copy, or delete files with the File Explorer in local Windows
> >> that require administrator privileges.
> >> What should happen, and happens again if I uninstall OpenAFS, is =
> >> a pop-up message such as "File Access Denied: You'll need to =
> >> administrator permission to copy to this folder". I can then then
> >> "Continue" (perhaps needing an admin password) to copy the file.
> >> When OpenAFS is installed, there is no pop-up message and the copy
> >> fails. This occurs with drag-and-drop and Ctrl/C+X+V copy and move, =
> >> deleting with the "Delete" key or button. Oddly, the pop-up message
> >> appear when creating or renaming a file or folder, so those =
> >> work. It is also possible to delete files from the context menu =
> >> the admin icon and don't normally require confirmation).
> >> This is a problem with Windows Explorer (now called File Explorer =
> >> 8) and seemingly nothing to do with OpenAFS, except that it occurs
> >> OpenAFS is installed. I can fix the problem by uninstalling =
> and the
> >> problem comes back when I reinstall OpenAFS. I tried disabling all =
> >> OpenAFS components with "autoruns" (and restarting), but the =
> >> remained. So I guess it is some change made by the OpenAFS =
> >> program. What changes does it make to the Windows Account Control =
> >> authorisation systems that might cause such an issue? I tried =
> >> registry dumps before and after uninstalling OpenAFS, but didn't =
> >> anything obvious.
> >> I used the standard OpenAFS IFS install and all the default options
> >> enabled, except integrated login), but it didn't help to disable =
> >> I am using 64-bit Windows 8 Standard Edition (so I can't check for =
> >> group policy changes, since that control panel requires Windows 8 =
> >> installed 64-bit OpenAFS 1.7.2600, but had the same problem with an
> >> version, 1.7.0800, that does not give me this problem on a Windows =
> >> system. So, it could be Windows 8 (vs 7) or Standard Edition (vs =
> >> Does anyone have any ideas? I would be very grateful for any fix or
> >> work-around. With OpenAFS installed, it is extremely cumbersome to =
> >> program file changes on my system. The only way I have to copy or =
> >> program files in Windows Explorer is by taking ownership and =
> >> permissions on all directories and files involved, making the move, =
> >> restoring the original permissions - a cumbersome and risky =
> >> else to do everything from the command-line from an Admin account.
> >> Thanks,
> >> Tim.
> >> =
=3D=3D cut here =
> >> Tim Adye T.J.Adye@rl.ac.uk http://hepunx.rl.ac.uk/~adye
> >> ATLAS Group, Particle Physics Dept, Rutherford Appleton Lab
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