To add French and Polish spell check in Microsoft 365 apps such as Word or Outlook:
- Open Word.
- Go to Review > Language > Language preferences.
- If French or Polish is listed with Proofing available, select it.
- If it is not installed, select Add a language.
- Choose French or Polish.
- Check Get proofing tools.
- Select Add.
After the languages are added, turn on automatic language detection:
- Go to Review > Language > Set Proofing Language.
- Select Detect language automatically.
If spell check still does not work correctly in mixed-language text, select the text and set the proofing language manually from Review > Language > Set Proofing Language.
In Outlook, the Review tab is available while editing or composing an email.
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