Troubleshooting Outlook connectivity to Exchange Online

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Now. This is one of those “Windows things”. Especially in case you are here because Outlook is repeatedly asking for a password. Which you know is the right one. So let’s check this one and keep it out of the way.

  1. Go to your Control Panel.Find and open “Credential Manager”
  2. Click on “Windows Credentials”
  3. Find and erase any credential that mentions email in it. Email that you are trying to connect to with your Outlook, that is.
    1. Also be sure to remove SSO-POP Device and SSO_POP_User
Windows Credential Manager
Windows Credential Manager

This is the example Credential Manager UI. Private data unfocused



Note: You better have Office 2013 🙂 2010 works but with manual setup. 2007 maybe. 2003 no. Does not work. In essence advice is: jump onto Office365 bandwagon ASAP. It is really cheap.

For Office 2010 users

Before you begin

  1. Be sure you have installed Outlook 2010 , 32 bit edition update KB2553248, by clicking HERE.
  2. Please be sure you have applied  Service Pack 2 for Microsoft Office 2010 (KB2687455) 32-Bit Edition, by clicking HERE.

Now you are ready for Office365

Please proceed bellow:


If you’re an Office 365 user using Outlook 2010, you need to set up your desktop before you can set up Outlook to access your account. For more information, see Use my current Office desktop apps with Office 365.

For Office 2007 users

Please update to Office 2013. It is cheap and it works. Save yourself a lot of time.


Please proceed here:

On the affected workstation, use a web browser to go to, and then click the Office 365 tab. Select the Outlook Anywhere (RPC over HTTPS) test. Provide your email address, Microsoft account name (UserID), and your Office 365 credentials. Make sure that you do not change the default setting of Use Autodiscover to detect server settings.

The Last Alternative?

One can setup connection to the O365 Exchange Server using non-default setup. That means : POP and IMAP access.  For instructions please jump HERE .