Hi @FRUITSTOCK SARL ,
It is impossible to use daemon to access personal account OneDrive files. Daemon app will use Application permission (without user) to do the operation. But based on the Microsoft Graph Get Files Permissions, Only Delegated permission is supported for personal Microsoft account. And Delegated Permission means app + user permission. Currently you have to implement Get access on behalf of a user and use auth code flow to access personal account OneDrive files with Microsoft Graph API.
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