Outlook Keeps Logging Me Out? 9 Ways to Fix It

What is Outlook keeps asking me to sign in?

Repeated sign-ins can happen when authentication tokens, saved passwords, cookies, & account settings do not update correctly. Broken cookies or saved passwords often cause this problem. Company security rules can also make you sign in again often. Old versions of Outlook can sometimes create sign-in loops. Problems with the WebView2 runtime can stop the sign-in process from working. 

Clearing the cache or fixing Outlook usually fixes this quickly. Signing out from all devices makes the system try to sign you in. Look at Microsoft’s guide for help with solving this problem. Outlook account keeps logging out of the Microsoft Dynamics CRM Online Outlook Client.

Why Does Outlook Keep Logging Me Out

1. Corrupted saved credentials: Damaged login data stored on your device prevents Outlook from verifying your identity; Outlook repeatedly asks for credentials.
2. Expired authentication tokens: Session tokens have limited lifespans. Once expired, Outlook can’t silently renew access. Prompts you to log in again.
3. Browser cookies being deleted: Clearing browser data or automatic cookie deletion settings removes session information, breaking your logged-in state on Web Outlook.
4. Microsoft 365 password changes: Updating your password anywhere invalidates sessions across devices, requiring fresh authentication everywhere you use Outlook.
5. Outlook profile problems: Corrupted or misconfigured local profiles interfere with how Outlook stores and reads your account connection details.
6. Cached credentials conflicts: Old saved passwords in Credential Manager clash with login details, causing repeated authentication failures.
7. MFA/authentication issues: Multi-factor authentication prompts can fail or loop if verification codes, apps, or trusted devices aren’t syncing properly.
8. Outdated Outlook: Older app versions often lack compatibility with authentication protocols, it leads to unexpected sign-out behavior.
9. Microsoft 365 service/account issues: Outages, account restrictions, or backend server problems on Microsoft’s end can disrupt your active session unexpectedly.

Why Outlook Keeps Signing You Out

Outlook uses authentication tokens to keep a session active so that a password is not needed each time. When authentication tokens expire, become corrupted, or fail to refresh, Outlook loses track of a login & forces a return to the sign-in screen. This issue can come from browser cookie problems, cached conflicts, expired Microsoft account sessions, security rules, or app synchronization failures. The exact cause usually depends on which version of Outlook is used, because each version handles authentication differently. If your Outlook file is corrupted then read this article: “Protect Your Inbox against Outlook PST Data File Corruption?”

Solutions by Version

• Web Outlook: Stored cookies or session data become corrupted, forcing repeated logins.
• New Outlook: Microsoft account tokens fail to refresh silently.
• Classic Outlook: Old saved passwords in Credential Manager conflict with login.
• Microsoft 365: Organization security rules or MFA settings demand re-verification.
• Mobile Outlook: App fails to sync with account, breaking the login session. [Microsoft Learn]

9 Ways to Fix Outlook Keeps Logging Me Out Issue

1. Update Outlook to the Latest Version

Microsoft regularly patches sign-in bugs through updates. Running an older version often triggers repeated logouts because older builds struggle with newer authentication protocols. Check for pending updates through your app store or Outlook’s built-in update option. Installing the release usually resolves login loops caused by compatibility issues between your account servers & older software versions.

2. Clear cached credentials

Windows stores passwords in Credential Manager, and outdated entries can clash with your current login details. Open Credential Manager, locate any saved Outlook or Microsoft account credentials. Remove them completely. Restart Outlook afterward so it prompts a sign-in. This clears data that silently causes the repeated logout problem many users face daily.

3. Sign out from all devices

Sometimes a stuck session on another device or browser interferes with your login. 

• Visit your Microsoft account security settings. 
• Choose the option to sign out everywhere. 
• Signing out everywhere ends Microsoft account sessions across supported browsers and apps. 
• Microsoft notes that the process can take up to 24 hours. 
• Once done, reopen Outlook & sign in again for a fresh authentication attempt.

4. Clear browser cookies (Web Outlook)

Corrupted & outdated cookies stored in your browser often break the session tracking Outlook relies on. 

• Go to your browser’s privacy settings. 
• Then, remove cookies related to Microsoft, Outlook, and Live accounts specifically. 
• Avoid clearing everything. After clearing, restart the browser. 
• Log in fresh. 
• This step fixes recurring web-based sign-out problems quickly. 

Note: For Outlook on the web: Clear cookies and cached site data for Microsoft/Outlook sign-in pages, then sign in again.

5. Repair New Outlook

• Windows includes a built-in repair tool that fixes broken app files without deleting your account setup. 
• Go to Settings, then Apps, find Outlook, and choose the repair option under Settings. 
• This resolves glitches causing constant authentication prompts.
• It’s a first step before attempting a full reset or reinstalling the entire application.

6. Check Conditional Access or MFA policies

Workplace accounts often follow security rules set by IT administrators. These policies may require re-verification based on location or sign-in frequency settings. If you’re using a business account, contact your IT team to check whether Conditional Access rules are causing the repeated logout behavior you’re currently experiencing.

7. Reset the New Outlook app

If repairing doesn’t help, resetting clears all app data and forces a completely fresh start. Go to Settings, Apps, select Outlook, & choose Reset under Advanced options. Try Repair first. If the issue continues, use Reset. Reset clears the app’s data, so you will need to sign in again. This step often fixes glitches that a simple repair cannot resolve.

8. Update WebView2 Runtime

New Outlook uses Microsoft Edge WebView2 for parts of its app experience. If WebView2 or its local data has a problem, it can contribute to sign-in or app issues. If this runtime is missing or outdated, authentication pages may behave unpredictably. Check that Microsoft Edge WebView2 Runtime is installed and up to date. If it appears damaged, repair or reinstall the runtime. Restart your computer after updating, then try signing in to see improvement.

9. Reinstall Outlook

When nothing else works, uninstall & reinstall Outlook can help you. If repair, reset, & other troubleshooting steps don’t work, reinstalling New Outlook can help resolve problems caused by a damaged app installation. Remove Outlook from your system, then restart the device. Install it fresh from the official Microsoft Store. This clears any root corruption in app files that repair or reset options couldn’t fully address.

Choose Cigati to Resolve Outlook Keeps Logging Me Out Issue

Look at the steps showing how Cigati PST Repair software helps you log in with simple steps.

You May Also Read: Outlook Encrypted Connection is Not Available Error

Conclusion

Dealing with Outlook keeps logging me out all the time can be really annoying. There are ways to fix Outlook. First, check if the internet is working well. Next update. Update the computer. Then ensure the username and password are correct for Outlook. Also, solve any problems that might be causing issues with Outlook. If Outlook still does not work, ask experts for help to get Outlook working smoothly again.

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