Windows 7 / Outlook 2010 SP2 + Patches Clients using Direct Access and configured for Forced Tunneling. Clients connect via a webproxy via DA Policy. User mailbox is migrated to Office 365 / Exchange online.
Problem
When on WAN / LAN normal Wi-Fi, there are no issues. But when client connects over Direct Access, Outlook will not connect to Office 365 and says disconnected. Windows 7 / Outlook 2010 is fully patched. (this may be where the problem lies). Access to webmail, normal internet is fine.
Solution / Workaround
At the time of writing there is no official word on Microsoft on this issue. (Although we have a pending case, in which I will update accordingly).
But after trial and error, I stumbled across this KB. (Not directly related but started the cogs turning.)
So I reversed this setting to Disable MAPI/HTTP (MS new way of connecting to Exchange) by adding the below Key.
Key: HKEY_CURRENT_USER\Software\Microsoft\Exchange
DWORD: MapiHttpDisabled
Value: 1
Note: The setting takes a few minutes to kick in, after it updates via AutoDiscover.
So how do you know when this is kicked in ?
OK, so where you would normally
see the “connection” tab in account settings, when MAPI/HTTP is enabled,
This disappears..:) Once this is disabled. It reappears..,
Once this became active. Outlook connected Via Direct Access !!!! Thanks MS. Await the Official KB / Hotfix....
