Outlook Continually Prompts For Password

If you're on Windows 7 and change your password on a regular basis follow these steps:

1. Click Start
2. Click Control Panel
3. View by: Small Icons
4. User Accounts
5. Manage your credentials
6. Delete everything in here.

OR

If you are being prompted for your password in Outlook try the steps below, one at a time to resolve the issue.

1. Can the user log in to OWA?  If yes, have them restart Outlook.
    
2. check the "remember credentials" box.
    
3. Clear your cached passwords (Note: you may need Admin rights to do this)
   • Exit Outlook and Lync.
   • Choose Start | Control Panel | View by Large Icons (upper right of window) | User Accounts | Manage your credentials (left column)
   • Select all credentials for Microsoft, Outlook or Lync and choose Remove from Vault
   • Exit and reboot your computer.
      
4. Rename the Outlook .ost file (if get error about "cannot open set of folders")
   • Close Outlook and Lync.
   • From the Start menu, choose Run.
   • In the Run window, type this path in the Open box  "%LOCALAPPDATA%\Microsoft\Outlook\"
   • Click OK
   • Find the .ost file and rename it (you may need to Show Hidden Files and Show Extensions to see the file)
   • Restart the computer
   • Restart Outlook
      
5. Verify that prompt for Credentials isn’t checked in profile:
   • Start Outlook
   • Choose  File | Account Settings | Account Settings
   • Select your Exchange account  
   • If prompted, in the Password: text box, type your password
   • Click the Change button 
   • Click the More Settings button
   • Select the Security tab
   • Deselect the "Always prompt for logon credentials" check box
   • Click OK,
   • OK
   • Choose Close
   • Restart Outlook.
      
6. Creating a New Profile (when you create a new profile, you will need to re-add any email account you check including shared departmental accounts)
   • Exit Outlook and Lync
   • Choose Start | Control Panel | View by  Large Icons (upper right of window) | Mail (may say Mail 32-bit)
   • Click Show Profiles
   • Click Add
   • Type the name of the profile e.g. your name and click OK
   • ​Enter your name and email if it doesn’t default in automatically
   • Click Next – it should auto configure
   • Click Finish
   • Back in the Mail window – Select your new profile in the "Always use this profile" dialog box and click Ok. 

NOTE:  you will need to reopen any .pst or archive files you have.  

8. Turn off Outlook Anywhere – don’t do this if this is a laptop that connects to email without using the VPN software.  If VPN doesn’t sound familiar and it’s a laptop, skip this.
   • Open Outlook
   • Choose File | Account settings | Account settings
   • Double click your account
   • Click the More Settings button
   • On the Connection Tab, uncheck "Connect to Microsoft Exchange using HTTP"
   • Click Apply
   • Click Ok until closes.
   • Restart Outlook.  Some users have trouble making this setting stick. 
   • If #2 doesn’t stick, you will need to create a new exchange profile.