OneDrive for Business 0x8004de40 sign-in error appears after password reset for managed devices: Fix Guide
After resetting your Microsoft 365 password, you might see error code 0x8004de40 when trying to sign in to OneDrive for Business on a company-managed device. This error typically appears because cached credentials stored by Windows Credential Manager become stale after a password change. The sync client cannot authenticate with the new password, causing the sign-in … Read more