How to Enable Windows Spellchecker in Microsoft Edge
Click the three-dot Settings and morebutton at the upper-right corner of the browser. Click Settingsand click Languages option. Scroll down to find Check spelling And turn on the toggle switches to enable spell checking for the languages you like.
How do I turn on spell check in Microsoft Edge?
Click the Settings and more (three-dotted) button from the top-right corner. Click the Settings option. Click on Languages. Under the “Check spelling” section, turn on the toggle switch for the languages that you want Microsoft Edge to check spelling while you’re typing.