Language settings in Word online
Is there a way to make the default dictionary/spelling language in Word Online not US and honour the actual regional settings of the tenant/user? It's quite annoying in an English (UK) environmen...
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Office Online is not the same as Office 365, even though Office 365 can be used online. Office Online is the scaled-down, free version of Office that you can only use online.
To change the language of Office Online, see How to change the display language used for the Office Online website (OneNote, Word, Excel, PowerPoint, Sway), about halfway down this page.