We have an office with some 20 users on Exchange online. Exchange online works well for all users. One user had an XP station running Office 2007, and finally updated to Windows 7 and Office 2013. Her mailbox worked on her old computer. On the new computer - freshly loaded with Windows 7 Pro and Office 2013 Home & Business, this one computer will *not* connect to Exchange Online / Office 365.
Every other station has worked, and continues to work without issue. Autodiscover is setup and works properly. Using the online exchange connectivity tester, and the Connectivity Analyzer installed on the machine in question, no errors are reported. Yet, Outlook will not discover the Exchange server and connect.
All updates have been installed. Office has been uninstalled and reinstalled (twice) and antivirus has been disabled. There are no third-party softwares installed save for Adobe Acrobat XI Pro.
There are no errors save for "cannot connect to Exchange" during the initial profile creation. Manual profile creation also does not work - it reports "Exchange is offline."
20 other users worked *flawlessly* when installing new stations. It's the same network, same Internet connection, and the old computer right next to the new one is able to connect to Exchange just fine.