User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:16.0) Gecko/20100101 Firefox/16.0 Build ID: 20120904124322 Steps to reproduce: Read the release notes for Firefox 13, 14 and 15. http://www.mozilla.org/en-US/firefox/13.0/system-requirements/ http://www.mozilla.org/en-US/firefox/14.0/system-requirements/ http://www.mozilla.org/en-US/firefox/15.0/system-requirements/ Actual results: Firefox requires SP1 for Windows Server 2003 to be installed as of Firefox 13. This is for the same reason that SP2 is required for Windows XP. This is not mentioned in the release notes so they are inaccurate. Expected results: Firefox should have accurate system requirements in its release notes.

This isn't a "general" issue, not even a "firefox" one since it's an issue on the website. Please leave bugs in "untriaged", thanks !

IsWow64Process() is being called at: http://mxr.mozilla.org/mozilla-central/source/netwerk/protocol/http/nsHttpHandler.cpp#676 Minimum system requirement for IsWow64Process() is W2K3 SP1: http://msdn.microsoft.com/en-us/library/windows/desktop/ms684139%28v=vs.85%29.aspx

The compiler being used for the Windows build now emits EncodePointer and DecodePointer calls, which requires Server 2003 SP1: http://msdn.microsoft.com/en-us/library/bb432254%28v=vs.85%29.aspx http://msdn.microsoft.com/en-us/library/bb432242%28v=vs.85%29.aspx It's definitely a requirement at this point.