...snuck in over the network.
I support about a dozen users who work with some stupid CRM app that keeps it's server address in a .cfg file in the install directory.
The server is "in the cloud", and our DNS is a fucking joke. So...if the DNS fails or the ip changes, I have a dozen people all over the country calling me in a panic because they can't work.
I figured out the issue and wrote a quicky script (actually a deploy job in LanSweeper) to copy out a new .cfg file with the correct settings.
It's kinda fun to just respond with "Try it now." and it works.
The user always says something like "My goodness you are magic."