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Taking ownership of a file

20 Feb 2018 ~ 2 min read


I’m currently looking at using IIS Administration as a way to automate some deployment tasks. However, the way it got installed, it’s appsettings.json file could not be written to, even when running the text editor as Administrator.

It turns out, SYSTEM had full control of the file, and the installer configured it to only allow me to access the ReST API, yet I needed a deployment script running from the Continuous Delivery server to be able to access IIS Administration, so I needed to modify the settings file, somehow.

To take ownership - The quick guide

So, to take ownership of the appsettings.json file, what I needed was to run two commands at command prompt running as Administrator.

takeown /f "appsettings.json" /a

icacls "appsettings.json" /grant administrators:F /c /l

TAKEOWN

/f [filename] : Specifies the file or directory name, can contain wildcards. /a : Optional, gives the ownership to the Administrators group, rather than the current user.  

ICACLS

/grant [sid]:[permission] : Where sid is the name of the user or group, and [permission] is the permission set, in this case F for “full access” /C : Indicates to continue on error /L : Indicates the operation will run on the symbolic link itself, rather than the target of the link.


Headshot of Colin Mackay

Hi, I'm Colin. I'm a software engineer with over 30 years of experience based in central Scotland, specialising in Microsoft technologies, initially with C++ and then in C#. I was a Microsoft MVP from 2007 to 2010 and a Code Project MVP from 2005 to 2009.