From time to time a user may have disabled Word’s built in proofing (spelling and grammar checking). To re-enable it, highlight all the words in the document, goto the REVIEW tab and select Set Language. You will likely see a checked checkbox labeled Do not check spelling or grammar. Removing this check will re-enable the proofing on this document only. To re-enable for all new documents by default, click on the button labeled Default.. Click YES and you’re… Read more »