Every developer has seen their share of bizarre error messages and dialog boxes. Some are confusing, some are contradictory, and some are just plain hilarious. Here’s a collection of some of the best ones I’ve come across over the years.

Adobe Setup setup? Yes, that’s what it actually said.

Got this one while using Chrome — it complains about Safari? Make up your mind, browser.

What a load of bullshit! Sometimes software just tells it like it is.

Really? A dialog box that can’t create a dialog box. The irony is strong with this one.

Very handy tips screen! When the help system needs help.

ERROR: NO ERROR! The most reassuring error message of all time.

These are a good reminder to always write clear, helpful error messages in your own software. Your users will thank you — or at least they won’t screenshot your app and post it on the internet.