How to Fix AADSTS140000 Request Nonce Is Expired in Outlook Desktop
Question details
The user needs to resolve an authentication error that prevents signing into Microsoft Outlook Desktop.
- Product
- Microsoft Outlook
- Device & OS
- Windows
- Scenario
- Attempting to launch and sign into Outlook Desktop using a work or school account.
- Observed behavior
- Outlook displays an AADSTS140000 or InvalidRequestNonce error, indicating an expired or inconsistent Microsoft Entra ID sign-in session, even though Outlook on the web may still function properly.
Ensure you know your Microsoft 365 login credentials and have administrative privileges on your device before attempting to clear Windows account settings.
Sync System Time and Update Software
An incorrect system time often causes authentication request nonces to expire prematurely. Syncing your clock and updating Office can quickly fix this mismatch.
Authentication tokens rely heavily on accurate timestamps. If your computer's clock is slightly out of sync with the Microsoft Entra servers, the sign-in request will automatically be rejected as expired.
Open Windows Settings and navigate to Time & Language > Date & time. Ensure that 'Set time automatically' and 'Set time zone automatically' are toggled on. Click the 'Sync now' button to align your clock with the time server.
Go to Windows Update in Settings and install all available updates for Windows. Open any working Office application (if possible), go to File > Account, and select Update Options > Update Now.
Reboot your PC to ensure all time synchronization changes and software updates are fully applied before opening Outlook again.
Clear Stale Credentials and Reconnect Your Account
Clearing cached authentication data and reconnecting your organizational account forces Outlook to generate a fresh, valid sign-in session.
Request Administrator Assistance
If local troubleshooting fails, the issue might stem from Microsoft Entra Conditional Access policies or a suspended account session that requires IT intervention.
Experience Seamless Document Management with WPS Office
While troubleshooting Microsoft Outlook authentication issues, consider WPS Office for your document needs. It offers a free, lightweight, and familiar interface that is perfectly compatible with Microsoft Word, Excel, and PowerPoint files.
- 1. Download the software: Visit the official WPS Office website and download the free installation package.
- 2. Install WPS Office: Run the installer to quickly set up the lightweight office suite on your Windows device.
- 3. Open your files: Double-click any Word, Excel, or PowerPoint document to open and edit it seamlessly within WPS Office.
Frequently Asked Questions
Why does Outlook on the web work when the desktop app shows the AADSTS140000 error?
Outlook on the web uses a different, browser-based session management system. The desktop application relies on local cached credentials and system tokens, which can become stale, corrupt, or out of sync with Microsoft's servers.
Will removing credentials from the Credential Manager delete my emails?
No. Clearing the Credential Manager only removes saved login tokens and passwords from your local computer. Your emails, contacts, and calendar events remain safely stored on the Exchange server and will immediately sync once you successfully log back in.
What does 'Request Nonce Is Expired' actually mean?
A 'nonce' is a unique, randomly generated security token used once during an authentication request to prevent malicious replay attacks. If this token expires before being processed—usually due to an incorrect system clock or severe network delays—the login attempt is rejected.
How do I know if a Microsoft Entra ID policy is blocking my sign-in?
If local fixes like syncing your clock and clearing credentials do not work, a Conditional Access policy may be blocking you. Your IT administrator can verify this by checking the Microsoft Entra sign-in logs, which will show specific failure reasons matching your login attempt timestamp.
