Comment by pixl97

This is what happens. All that testing with the required stakeholders takes way way more time than you'd expect.

Gets even more fun in .gov where the work can change significantly at particular times of the year.

Had one piece of Windows software required by the State of Texas used at year end like once a year. Seemingly nobody realized windows updates had stopped it from working until a few weeks before the deadline. I had to setup a box without updates for it to run for my customer. Lead to a lot of panic around the state.