Outlook repeatedly asking for your password is a common problem after you update your network or Microsoft 365 credentials. The issue occurs because Outlook stores your old login information in the Windows Credential Manager. This article provides the steps to clear that cached data and stop the password prompts.
You will learn how to access the credential vault in Windows 10 and Windows 11. The guide also covers how to update your account within Outlook itself to ensure a clean authentication cycle.
Key Takeaways: Stop Outlook Password Prompts
- Control Panel > User Accounts > Credential Manager > Windows Credentials: Remove stored Outlook and Microsoft Office credentials to force a fresh login.
- File > Account Settings > Account Settings: Re-enter your updated password directly in Outlook’s account settings menu.
- Windows Security > Credential Manager: Access the credential vault directly via the Windows 11 search bar for a faster fix.
Why Outlook Continues to Ask for a Password
When you change your password for a Microsoft 365 or Exchange account, the update is not always communicated instantly to all parts of Windows. Outlook relies on the Windows Credential Manager, a secure vault that stores usernames and passwords for various applications and services.
After a password change, Outlook tries to connect using the old, cached credentials from this vault. The server rejects these credentials, causing Outlook to display a persistent login dialog. Simply typing the new password into this pop-up often fails because the old cached entry takes precedence.
The Role of Modern Authentication
Most business Microsoft 365 accounts use Modern Authentication. This system uses access tokens instead of constantly sending your password. A password change invalidates the old token, but a corrupted cached credential can prevent a new token from being issued properly. Clearing the credential cache removes this blockage and allows the new authentication flow to complete.
Steps to Clear Cached Credentials in Windows
The most reliable method is to delete the outdated credentials from the Windows system. Follow these steps for Windows 10 or Windows 11.
- Open Windows Credential Manager
Click the Start button and type “Credential Manager.” Select the Control Panel result named “Credential Manager.” In Windows 11, you can also find it by searching for “Windows Security” and selecting “Credential Manager” under the dashboard. - Navigate to Windows Credentials
Inside the Credential Manager window, click on “Windows Credentials.” This section holds the system-level passwords for network resources and applications like Outlook. - Locate and Remove Outlook Entries
Look for entries with names like “MicrosoftOffice16_Data,” “Outlook,” “Exchange,” or your company’s mail server address. Expand the entry by clicking the down arrow, then click the “Remove” button. Repeat this for any credential related to Office or your email account. - Restart Outlook
Close the Credential Manager and restart Outlook. You should now see a fresh login prompt. Enter your new password and check the box to remember your credentials if desired.
Update Your Account Password in Outlook
If prompts continue, update the password directly within Outlook’s account settings.
- Open Account Settings
In Outlook, go to File > Account Settings > Account Settings. - Select and Change Your Account
In the Email tab, select your email account and click “Change.” In the dialog box that appears, retype your new password in the Password field. Click Next to test the settings. - Complete the Update
Outlook will test the login. Once it succeeds, click Finish and then Close. Restart Outlook for the changes to take full effect.
If Outlook Still Asks for a Password
Outlook Prompts for Password After Deleting Credentials
If the password prompt returns, the issue may be with your Outlook profile. A corrupted profile can fail to save new authentication tokens. Create a new Outlook profile via Control Panel > Mail > Show Profiles > Add. Set up your account with the new password in the fresh profile.
Password Pop-up Appears in a Loop
A continuous authentication loop often points to an incorrect server setting. Verify your account settings under File > Account Settings. Ensure the server name and username match your IT department’s specifications. An incorrect mail server address will always cause login failures.
Credentials Dialog Shows for Only One Computer
When the problem happens on one machine but not others, check for third-party security software. Antivirus or firewall applications can interfere with Outlook’s connection to Microsoft servers. Temporarily disable such software to test, or add Outlook to its exclusion list.
Manual Cache Deletion vs. Automatic Update
| Item | Manual Cache Deletion | Automatic Password Update |
|---|---|---|
| Primary Action | User manually removes credentials from Windows Credential Manager | User enters new password into Outlook’s login prompt or account settings |
| Success Rate | High, as it forcibly clears the corrupted source | Low after the first failure, as cached data blocks the update |
| Best Used When | Password prompts are persistent and recurring | The password change is very recent and no prompts have appeared yet |
| Technical Skill Required | Low to moderate | Very low |
| Permanence | Solution is typically permanent until the next password change | May only be temporary if underlying cached credential remains |
You can now stop Outlook from repeatedly asking for your password. Clear the Windows credential cache as your first troubleshooting step. For ongoing management, consider using the new Outlook profile method if problems recur. An advanced tip is to run the Microsoft Support and Recovery Assistant, which can automatically detect and fix many authentication-related issues.