RPC over HTTP (known as Outlook Anywhere) is being deprecated in Office 365 and you need to make sure that your Outlook clients and 3rd party MAPI based applications are updated or patched to use the new MAPI over HTTP protocol prior to the October 31st deadline.
Customers need to have the following clients and service packs on or before Oct 31st or will lose connectivity to Office 365.
| Office version | Update | Build number |
| Office 2016 | The December 8, 2015 update | Subscription: 16.0.6568.20xx MSI: 16.0.4312.1001 |
| Office 2013 | Office 2013 Service Pack 1 (SP1) and the December 8, 2015 update | 15.0.4779.1002 |
| Office 2010 | Office 2010 Service Pack 2 (SP2) and the December 8, 2015 update | 14.0.7164.5002 |
Want to learn more?
