Open the document or item that you want to check. On the File menu, click Options > Proofing> Recheck Document. In Outlook you'll find this under File > Options > Mail > Spelling and Autocorrect Click Yes when you see the warning message about resetting the spelling and grammar checker. Click OK in the dialog box to get back to the document, and then run the spelling and grammar checker again. You can also choose Select All and Recheck Document,
