Hi Ann, I get how confusing that can be when you’ve already checked the settings. Usually, this happens if the language for the text doesn’t match the proofing language or if “Do not check spelling or grammar” is turned on for the document. Let’s try a couple of quick checks: open Word, select some text, go to Review > Language > Set Proofing Language, and make sure the correct language is selected and the checkbox for “Do not check spelling or grammar” is unchecked. Also, confirm that the spell checker is enabled under File > Options > Proofing. If it still doesn’t work, is this happening in all documents or just one? And are you using Word on Windows, Mac, or online?