How do I disable the default spell checker in Microsoft Outlook?

When using MerciApp Windows, you may need to disable the spell checker installed by default in Microsoft Outlook, which is less powerful than the MerciApp solution. To do so, follow the steps below.

Click on File and select Options

A window will open with a list of sections on the left.

In the side menu, select "Mail" and then click on "Proofing."

Disable the "Correct as I type" option.

If you have trouble disabling the spell checker, feel free to use the chat feature at the bottom right of this page to contact us.

Updated on: 11/02/2026