Troubleshooting Outlook connectivity to Exchange Online

Before You begin

It is very likely you are here because you have a real problem and you need a real help. So, before you begin let us quickly check that you know your user name and password.  That is your Office365 credentials.

You local Outlook installation might be in the limbo, thus you can not rely on it. Not to worry. Just please click on the link bellow.

This opens your favorite browser and you see in front of you, good old user name & password little dialogue.


type in your user name, password and click “Log In”. If all is dandy and fine you will receive , so called JSON messages in a file, called messages.json. This is coming straight from the mail server containing all your inbox items. If either user name or password are wrong Authentication dialogue will pop-up again. You know the drill.

So we know that you have your Office365 account, you know you credentials and server is there and functions properly.

Now that you have established your credentials please proceed.


Using either “cracked” Windows or “cracked” Office 2010, 2007 or 2013, will inevitably lead into the strange universe where things do behave in most peculiar ways. And where one can easily loose oneself. Therefore the procedures explained bellow might not yield any meaningful results, in case you choose that path.

Before using Office 365 with your local Windows and/or Office installations, please make sure they are both registered AND activated.



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 .