207 votesAnonymous commented
We are using AzureADSync with attribute "PreferedLanguage" so most of the O365 services are using the correct language. Only the Onedrive for Business (*.mysharepoint.com) is always created with the default language from the tenant. i found a way to change via https://*-my.sharepoint.com/_layouts/15/muisetng.aspx . After that the language is correct displayed for the employees.
I would like to have a global setting for alternate language in the Onedrive for Business (mysharepoint) sites.