Fix Outlook Incorrect Username or Password Errors When Password is Correct
Question details
The user is unable to log into the Outlook desktop application and receives an incorrect password error message, even though the entered credentials are correct.
- Product
- Microsoft Outlook
- Device & OS
- Windows
- Scenario
- Attempting to sign into the Microsoft Outlook desktop client using valid Microsoft 365 account credentials.
- Observed behavior
- Outlook repeatedly prompts an incorrect username or password message and blocks access to the account, often due to licensing or token sync issues.
Verify that your account has not been locked by logging into the Outlook web version. Ensure your Microsoft 365 subscription includes access to desktop applications rather than just web-only versions.
Re-authenticate the Account via Windows Settings
Reconnecting your work or school account in Windows Settings can refresh your authentication tokens and resolve password-hash synchronization issues.
Authentication-token mismatch or password-hash synchronization delays can cause Outlook to reject correct passwords. Removing and re-adding your account directly within the Windows operating system settings forces a fresh token request from Microsoft 365.
Check your Microsoft account portal to ensure you have an appropriate license that includes desktop apps, such as Microsoft 365 Standard.
Click the Start button and select the gear icon, or press the Windows key + I on your keyboard to open Settings.
Click on 'Accounts', then select 'Access work or school' from the left-hand navigation pane.
Locate the problematic email account in the list, click on it, and select 'Disconnect' to remove the saved credentials and tokens.
Click the 'Connect' button to add your account back. Enter your email and password when prompted, then open Outlook again to test the connection.
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- 1. Download the Installer: Visit the official WPS website and download the free installer for your operating system.
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Frequently Asked Questions
Why does Outlook say my password is wrong when I know it is correct?
This commonly happens due to corrupted local authentication tokens, delayed password-hash synchronization on Microsoft's servers, or because your Microsoft 365 subscription lacks desktop application access.
Can a web-only Microsoft 365 license cause desktop Outlook login errors?
Yes. If your subscription (like Office 365 E1 or Business Basic) only includes web access, the desktop Outlook app will reject your login, often displaying a generic incorrect username or password error.
How do I force Outlook to prompt for my password again?
You can force a new prompt by clearing your old credentials. Search for 'Credential Manager' in the Windows Start menu, select 'Windows Credentials', and remove any saved items starting with 'MicrosoftOffice'.
Will reinstalling Outlook fix the incorrect password issue?
Usually, reinstalling Outlook does not fix this specific issue because the authentication tokens and Windows account settings remain on the system. It is faster and more effective to remove and re-add the account in the Windows 'Access work or school' settings.
