Has it ever happened that you knew that a particular word is misspelled, but PowerPoint’s spell check doesn’t seem to think so! That may be because your word may be in all CAPS, or it may contain some numbers. In these cases, and several other similar instances, PowerPoint ignores some misspellings. Fortunately, you can turn off the options that instruct PowerPoint to ignore these misspellings. Remember though that changing these options will apply to all Microsoft Office applications you have installed on your computer including Word, Excel, and Outlook.
Learn how to set spell check options in PowerPoint 365 for Windows.

