Ensure that spell check is working in MS Word: Outlook uses MS Word for a spell-check.Here’s a look at a few of them, especially if Outlook spell check not working. There are various ways by which you can ensure that the spell checker is working fine on your system to overcome Outlook Email problems with the spell checker. This blog post will guide you with some effective troubleshooting methods to fix the Outlook 2016 spell check not working issue and discuss the reasons behind the problem. If your Outlook spell check not working, instead of worrying about it, you should take the necessary steps to rectify the issue and start sending emails without any error. Did you ever notice that your grammar or spelling checker is not flagging the mistakes? If yes, then it’s a matter of concern as spelling and grammar checkers should work properly and raise necessary alerts for you to send emails to your recipients, error-free. While Outlook is widely used for its robust features and user-friendliness, you would always ensure that no grammatical or spelling mistakes ever happen.