When using Microsoft Outlook spell correction is not working
Checks to make:-
Windows XP – Control Panel –> Regional Languages and Settings
(Earlier Windows – Control Panel –> Keyboard)
Make sure each setting is your chosen language e.g English (UK)
In Outlook click Tools –> Options –> Spelling
Check AutoCorrect options and make sure “Correct as you type” is checked
Outlook 2007 and Word
If you have installed Microsoft Outlook 2007 but not Word 2007 a lot of the AutoCorrect options are disabled as Outlook 2007 always uses Word to edit messages. You have to install Word 2007 to enable these options.