IE7 Not Supported on Windows Vista!!
I have seen a lot of silly error messages, but this is the most hilarious so far. A colleague of mine tried to launch the installer/updater for Internet Explorer 7 on Windows Vista and got the error message shown below - Internet explorer is not supported on this operating system. I couldn’t stop laughing: IE7 installs even on Windows XP, and comes bundled with Windows Vista.
Seriously, Microsoft developers need to work on their notification messages. See this older but equally hilarious error message.

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on January 6th, 2008 at 1:34 am
at least they tell you what went wrong, some programs just conk out with nary an error message. And i have to be honest, i think Microsofts band of over paid developers write better notification messages than some companys i know.