You may be getting this prompt if:

• Your browser auto-fill is disabled
• Your browser auto-fill has the wrong information
• If persistent log in is not set up correctly

When you are signed in to your Yahoo! account, you may be prompted to sign in again under the following circumstances:

Account sign-in prompt troubleshooting:

• Clicking "Sign Out":
  - You may have accidentally clicked Sign Out.
   
• Going to the Account Info page:
  - For your security, we always prompt you for your password when accessing sensitive information.
   
• Changing your sign-in settings in Account Info:
  - If you modified "Change sign in setting" on your Account Info page, you may have reset the amount of time before Yahoo! asks you to re-enter your password.
  - Follow these steps to check this setting for your account:
  
  1. Sign in to Yahoo!.
  2. Click the down arrow next to your name, and select Account Info.
     
     
     
     - The Account Info page opens.
     Note: If prompted, re-enter your password and click Sign-In.
      
  3. Under "Sign-In and Security," click Change sign-in settings.
     
     
     - The "Change sign-in settings" form opens.
     
     
  4. From the Sign me out every menu, select either:
     - day: If you select "day," Yahoo! overrides the amount of time that you remain signed in using the "Keep me signed in for 2 weeks" option on the Sign-In page. In 24 hours, Yahoo! automatically signs you out.
     - 2 weeks: If you select "2 weeks," you'll stay signed in for two weeks.
  5. Click Save.

• Signing in to a different Yahoo! account in a new browser window or tab:
  - Opening another browser window or tab and signing in to a second Yahoo! account will automatically sign you out of the first account.
  - When you return to the first account, clicking any link may give you the "Your login session has expired" message.
  - To sign in to two different accounts at the same time, use two different browsers like Internet Explorer and Firefox.

• Using browser extensions and/or security software that clear cookies automatically:
  - Some browsers and security programs clear sign-in cookies each time you close your browser, causing you to have to sign in again when you re-open your browser. (An example is the program Webroot Window Washer.)
  - To use the "Keep me signed in" setting, you'll need to disable ("turn off") or uninstall these security programs. For information, see Temporarily turning off anti-virus, anti-spyware, and firewall products.
  - Another option is to modify their settings to prevent them from deleting cookies for the yahoo.com domain. For information about modifying these settings, please refer to the product's help file.

• Manually clearing cookies from your computer:
  - Manually deleting cookies from your browser will remove the cookies that keep you signed in to Yahoo!.

• Your browser is automatically clearing cookies or the cookie file has been corrupted:
  - Verify whether your browser is automatically clearing cookies. For information, see How to check if your browser is automatically clearing cookies.
  - If your cookie files have become corrupted, you need to clear your cookies. For information, see How to clear your browser's cookies and cache.
  - We recommend using a current version of your browser, to get the latest version click the link for your browser:
  * Microsoft Internet Explorer
  * Mozilla Firefox
  * Apple Safari
  * Google Chrome