Microsoft began to distribute Windows Internet Explorer 8 as a high-priority update through Automatic Updates for Windows XP with Service Pack 2 (SP2), Windows XP with Service Pack 3 (SP3), Windows XP Professional x64 Edition, Windows Server 2003 with Service Pack 2 (SP2) for x64 and x86, Windows Vista for x64 and x86, Windows Vista with Service Pack 1 (SP1) for x64 and x86, and Windows Server 200