Manually Configure Office 365 with Outlook 2010
This document explains how to manually configure Office 365 with Outlook 2010 using Microsoft's Remote Connectivity Analyzer.
Go to https://testconnectivity.microsoft.com/ .
Click on the Office 365 tab and select Outlook Autodiscover. Click Next in the bottom right corner.
Fill in your email, MicrosoftAccount (same as your email), and password, and check the I understand box. Type in the verification letters and numbers and click Verify. After the verification is accepted, click Perform Test.
After the results show, click Expand All.
Use the browser find feature (Ctrl + F) to search for "<server>". Click Next or the right arrow until you see text that is similar to this example string: <Server>email@example.com</Server>. Select and copy the text between the < > fields (Example... firstname.lastname@example.org) - you'll paste it in as your server name later.
Make sure all other Office products (Outlook, Lync, etc.) are closed, then go to Start > Control Panel > Mail (32- bit) > Email Accounts.
In the Server: field, erase the existing name and paste your new server name that you have copied. Make sure that your user name is set up with your full email address, as seen below, then click More Settings...
Go to the Connection tab and click Exchange Proxy Settings...
Delete the existing fields in the boxes displayed above. Type "outlook.office365.com" into the https:// box and "msstd:outlook.com" into the proxy server principal name box.