OneNote language settings not working: Fixes that work

If OneNote keeps reverting proofing to the wrong language, the setting may be attached to a specific text block, the app may be using a different default on new pages, or Windows keyboard input may be affecting what OneNote uses. This guide helps you check the right place for each case and use the available OneNote commands.

Language troubleshooting matrix

Why is OneNote not remembering your proofing language?

Most often, OneNote is remembering what was set on one selected block of text rather than the whole note. That can make the language seem to change again when you type in another block or move to a different page.

Say your note has English text at the top and French text below it. If you set proofing language on only the top paragraph, the next paragraph can still use another language and look like OneNote ignored the change.

Most common cause: the setting was applied to one selection only

1. Select the text block that keeps changing.
2. Go to Review > Language > Set Proofing Language.
3. Choose the language for that selected text.
4. Apply the same language to each separate text block that needs it.
5. Check the page again after reopening it to confirm the block still uses the intended language.

App-level cause: OneNote options language does not match the proofing choice

OneNote options language is the app preference, not the same thing as proofing language. In some builds it can show variants such as English (Sweden), while the proofing choice on the page uses another language. That mismatch can affect new-page defaults.

1. Open OneNote desktop settings for language if your version exposes them in File > Options > Language.
2. Check whether the app language matches the language you want OneNote to prefer.
3. Restart OneNote.
4. Create a new page and type a short sample line to verify the proofing language.

System-level cause: Windows keyboard language resets the default

Windows keyboard language can influence what OneNote picks up at launch and, in some versions, what it uses for proofing. That is why a preferred typing language can conflict with the layout OneNote keeps choosing.

1. Switch the Windows keyboard input to the language you want OneNote to favor.
2. Close OneNote completely.
3. Open OneNote again.
4. Recheck the proofing language on a new page and on an existing page.

How do you change the language so it stays fixed?

In desktop OneNote, start with the selected text, not the whole notebook. The command that matters is Review > Language > Set Proofing Language. Then make sure the app language preference and the Windows keyboard language are not pulling in a different default.

Desktop OneNote: set proofing language on the selected text

1. Highlight the text you want to keep in one language.
2. Open Review > Language > Set Proofing Language.
3. Pick the language for that selection.
4. Close the dialog and type a short test word in the same block.
5. Open a new page only after the selection behaves as expected.

A common first-time mistake is changing the language while the caret is inside the wrong text block. That can make the change look temporary, because the next block still carries its own proofing setting.

Check the app default, then restart OneNote

1. Open the OneNote language options if your desktop build provides them under File > Options > Language.
2. Set the preferred app language there if it differs from your proofing choice.
3. Close OneNote completely.
4. Open it again and create a new page.
5. Verify whether the new page starts in the expected language.

Match Windows keyboard input to the language you want

1. Change the Windows keyboard language to the layout you want to use.
2. Open OneNote after the keyboard switch, not before.
3. Type a new line of text and check whether proofing follows the new input language.
4. If it does not, return to the selected-text proofing setting in OneNote desktop.

How do you open Set Proofing Language if the panel doesn't show?

If the command will not open, treat it as a UI problem first, not a language problem. One user reported that Set proofing language did not open after clicking it, and a workaround was to pin the command to the Quick Access Toolbar. In Microsoft 365 OneNote on Windows, another workaround was File > Update License (per Microsoft support). (Microsoft Learn)

Use the ribbon command first

1. Go to the Review tab.
2. Click Language > Set Proofing Language.
3. If the command opens, apply the language to the selected text.
4. If nothing appears, move to the Quick Access Toolbar workaround.

Pin the command to the Quick Access toolbar

1. Find Set Proofing Language in the ribbon command list.
2. Add it to the Quick Access Toolbar.
3. Click the toolbar version of the command.
4. Use it again on the text you selected.

Check whether the command is being hidden by the window state

1. Resize the OneNote window.
2. Look for any command that may be obscured by the current layout.
3. If the app appears unresponsive, close and reopen OneNote.
4. Try the toolbar shortcut again after reopening.

Try Update License in Microsoft 365 oneNote

1. Open File.
2. Select Update License.
3. Return to the page and try Review > Language > Set Proofing Language again.
4. If the command still fails, report it through the built-in Feedback option.

Does OneNote use Windows keyboard language for proofing?

Sometimes it does, and that is where version differences matter. OneNote for Windows 10 is reported to use the Windows keyboard language, while desktop OneNote behaves differently and may let the selected-text proofing language override the keyboard choice. That is why the same fix can work in one app and fail in the other.

Desktop OneNote: treat keyboard language as a factor, not the only control

1. Set the proofing language on the selected text with Review > Language > Set Proofing Language.
2. Check the OneNote options language if your build includes it.
3. Then match the Windows keyboard language to the language you want for typing.
4. Reopen OneNote and verify the result on a new page.

OneNote for Windows 10: check the keyboard language first

1. Switch the Windows keyboard input to the preferred language.
2. Close OneNote for Windows 10.
3. Open it again.
4. Test a new note and confirm whether the proofing language follows the keyboard.

Why do new OneNote pages default to the wrong language?

New pages can inherit the wrong language when the app default and keyboard input do not match your preferred proofing choice. A report on Microsoft 365 OneNote for Windows 10 Enterprise described new and existing pages not recognizing the preferred proofing language, and another report on OneNote 2016 on Windows 10 said new pages still used the wrong language. (Microsoft Learn)

Set the language on the first typed block, then create a new page

1. Open a page with fresh text.
2. Select the first block and set Set Proofing Language.
3. Type a short test sentence in that block.
4. Create a new page.
5. Check whether the new page inherits the same language or falls back to the wrong one.

Use separate blocks for separate languages on the same page

1. Highlight the first language block.
2. Set its proofing language.
3. Highlight the second language block.
4. Set a different proofing language for that block.
5. Return to each block after reopening the note to confirm the setting stayed attached.

What should you do if changing OneNote language settings doesn't work?

If the setting still reverts after the correct menu path, the issue is likely version-specific or product-limited. At that point, use the built-in Feedback option and report it directly to the OneNote product team.

Use the built-in feedback route

1. Open the Feedback option inside OneNote.
2. Describe the exact symptom, such as the panel not opening or new pages reverting.
3. Include the app version and Windows version.
4. Submit the report to the OneNote product team.

Escalate in a clean sequence

1. Retry Review > Language > Set Proofing Language on selected text.
2. Confirm the OneNote options language.
3. Match the Windows keyboard language.
4. Restart OneNote.
5. Submit Feedback if the behavior persists.

Frequently asked questions

How do you change the language in OneNote so it stays fixed?

In desktop OneNote, select the text, then use Review > Language > Set Proofing Language. After that, check File > Options > Language if your build has it, and restart OneNote. If the page still flips back, align the Windows keyboard language before reopening the app.

Why does OneNote keep switching back to the wrong language?

That usually means another layer is overriding the selection. The most common candidates are the selected-text proofing setting, the app language preference, and the Windows keyboard language. If the issue appears only in OneNote for Windows 10, test the keyboard language first because that app follows it more closely.