Below are troubleshooting steps that apply to Word 2010 and newer.
This is the most likely culprit and most straightforward solution.
If you haven’t enabled automatic spell-checking, the tool won’t function as you expect.
Review the dictionary parameters.
Go toFile>Options>Proofingand look forSuggest from main dictionary only.
Check Word’s proofing language.
It might miss errors if it’s set to the wrong proofing language.
Check for proofing exceptions.
Open Word in Safe Mode.
Rename the default template.
There might be something wrong with Word’s global template, called normal.dotm.
Renaming the template could fix the problem.
Word will generate a new default document without any customizations.
If all your efforts haven’t resolved the spell-check problem, use the built-in repair utility to fix Word.
This tool is only available for Windows versions of Office.
This will not delete your Word documents.
You might have changed a simple setting, or the language prefs may be off.
To solve the problem, back up your document to a local drive and open it from there.
To turn off spell check in Word on a PC, go toFile>Options>Proofing.
Uncheck the box next toCheck spelling as you key in.
On a Mac, go toTools>Spelling & Grammarand selectHide Spelling Errors.
To reset Word’s spell check on a PC, go to theToolsmenu and selectSpelling & Grammar>Options.
In theProofing Toolssection, selectRecheck Document.
On a Mac, go toTools>Spelling & Grammarand selectReset Ignored Words and Grammar.
