Dutch grammar option disabled in Edge Writing Assistance

Additional details:

Tested on:

- Windows 11

- Microsoft Edge

- Clean unmanaged device

- Managed device

On the managed device, these language capabilities are installed:

- Language.Basic nl-NL

- Language.Basic fr-FR

- Language.Basic de-DE

- Language.Basic en-GB

- Language.Basic en-US

The same issue appears on the clean unmanaged device, so I do not think this is caused by GPO, Intune or SCCM.

In Edge settings:

edge://settings/languages/writingAssistanceLanguages

Dutch:

- Enhanced spell check: available/enabled

- Grammar: disabled, not possible to enable

Other languages such as French and German appear to expose grammar correctly.

The Microsoft Editor language availability page lists Dutch as supporting spell check, grammar check and writing refinements:

https://support.microsoft.com/en-us/word/editor-s-spelling-grammar-and-refinement-availability-by-language