Hello,
Preview languages in Office 365 are handled in the cloud, but differences in hardware or software capabilities, or differences in the availability of certain language models, can be possible explanations for unavailability. The preview is currently only available on Windows and is not yet available in browser sessions. Language Accessory Packs are available for Microsoft 365, which allow users to select the language they want to use in Microsoft 365 applications. Language packs can be deployed by administrators using the Deployment Tool. Canvas, a learning management system, also allows users to change the language preference in their user account.
Differences in hardware or software capabilities, or differences in the availability of certain language models, can be possible explanations for unavailability of preview languages. For example, if a device does not have the necessary hardware or software to support a particular language model, that language may not be available for preview. Additionally, if a language model is not available in the cloud, it may not be available for preview. This can also be affected by the version of the software being used, as some features may not be available in older versions. Finally, errors in file types or missing theme files can also cause preview errors.
For more Information, please refer to following resources :-
- Release Notes for Office Current Channel (Preview) - https://learn.microsoft.com/officeupdates/current-channel-preview
- Language Accessory Pack for Microsoft 365 - https://support.microsoft.com/office/language-accessory-pack-for-microsoft-365-82ee1236-0f9a-45ee-9c72-05b026ee809f
Unfortunately, I don't have any further troubleshooting to offer.
There are many knowledgeable users active on the forum and I hope that someone else can offer further insight on your issue.
Thanks,
Sneha