OneDrive for Business 0x8004de40 sign-in error appears after password reset for help desk teams: Fix Guide
When a user resets their Microsoft 365 password, OneDrive for Business often shows error code 0x8004de40 during the next sign-in attempt. This error prevents the sync client from connecting to the cloud, leaving files unsynchronized and the user unable to access their OneDrive folders. The root cause is stale cached credentials that the OneDrive app … Read more