How can I change the language of a OneNote section (or page/notebook)

Solution 1:

After some testing I can confirm that OneNote always uses the input language set in the Region and Language control panel.

However, you can combine any input language with any keyboard layout (at least in Windows 7), so the (hopefully temporary) fix is to add a new input language combined with the original keyboard layout.

Solution 2:

This has a microsft-onenote-2010 tag, I can't tell how it works in 2010 but in OneNote2013 I did:

1. Select the text or page
2. Set the desired language in Review > Language > Set Proofing Language

and it worked.

Solution 3:

While this works to some extent, I also found another workaround: Set the first text box of your section to the desired language, and when you want to create another section, type out the first few letters in your text box that's already in the desired language and then use the drag/drop handle to move it to where your new text box should be. It'll retain your desired language.

Solution 4:

I am also frustrated by this.

In OneNote for Store, there's no such thing as Tools / Review.

So my workaround is: Settings > Proofing > Hide spelling errors.

:(

Solution 5:

One can use format painter to apply the proofing language to selected text in OneNote at least as of version 1908 from Office 356.