When you replace a user’s device and set up OneDrive, error 0x8004de40 appears during sign-in. The error message says the sign-in could not be completed, and it returns repeatedly even after clearing credentials. This error occurs because the device identity or authentication token cached in the Windows credential manager conflicts with the Microsoft Entra ID … Read more
The OneDrive sync client error 0x8004de40 appears when you try to sign in to OneDrive for Business but the authentication process stops before completion. This error occurs most frequently after your IT team updates a Conditional Access policy in Microsoft Entra ID. The sync client retains an outdated token that the new policy rejects, causing … Read more
The OneDrive sync client repeatedly shows error code 0x8004de40 during sign-in, even after you enter your credentials. This error indicates that the authentication token has been rejected, often because of a recent change to your organization’s Conditional Access policies. The client cannot refresh the token silently, so it fails every time you try to connect. … Read more
Users in your tenant see the 0x8004de40 sign-in error repeatedly, even though you have made changes to Conditional Access policies. This error indicates that OneDrive cannot refresh the user’s authentication token, usually because a Conditional Access policy blocks the token renewal flow. The error reappears because the policy change did not apply to the background … Read more
The OneDrive for Business error code 0x8004de40 appears when you try to sign in and the authentication process fails. This error often returns even after standard troubleshooting steps like clearing credentials or reinstalling the app. The root cause is typically a corrupted token cache or a mismatch in the authentication broker on Windows. This article … Read more
The OneDrive for Business sign-in error 0x8004de40 prevents users from connecting to their cloud storage. The error message appears when you try to sign in to OneDrive, and it keeps returning even after you enter your credentials multiple times. This error typically indicates a problem with the authentication token or a conflict between cached credentials … Read more
When users report the OneDrive sign-in error 0x8004de40, the issue often reappears even after standard fixes like clearing credentials or reinstalling the sync app. This error indicates that OneDrive cannot verify the user’s identity with the Microsoft 365 authentication service, typically due to a misconfigured Conditional Access policy, a broken Azure AD token cache, or … Read more
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
Help desk teams frequently encounter OneDrive sign-in error 0x8004de40 immediately after a user resets their Microsoft 365 password. This error indicates that the cached credentials stored by OneDrive no longer match the new password, causing the sync client to fail authentication. The issue is not a corruption of the OneDrive application itself but a stale … Read more
When a user resets their Microsoft 365 password and then tries to sign in to OneDrive, the sync client may display error code 0x8004de40. This error indicates that the cached credentials stored in Windows Credential Manager are stale or corrupted. The help desk must clear these old credentials and force a fresh authentication token. This … Read more