Outlook Connectivity with MAPI over HTTP | Microsoft Community …
May 9, 2014 · MAPI/HTTP increases the CPU load in the Exchange Client Access Servers. This is a 50% increase over Exchange 2013 RTM, however it is still lower than Exchange 2010 …
Understanding how Outlook, CDO, MAPI, and Providers work …
Apr 8, 2005 · CDO and Outlook are both MAPI applications, meaning that they use MAPI APIs to access their data, and therefore, the underlying providers. CDO and Outlook share a common …
Planning considerations for REST-based (aka new model) calendar …
Aug 12, 2022 · The REST Model The new calendar sharing model based on REST is designed to avoid MAPI issues related to conflicting permissions and multiple editing delegates. This is …
Shared Mailbox Send As issues | Microsoft Community Hub
Dec 15, 2021 · Microsoft.Exchange.Data.Storage.SendAsDeniedException: Can't transport send message. ---> Microsoft.Mapi.MapiExceptionSendAsDenied: MapiExceptionSendAsDenied: …
Exchange 2013/2019 coexistence and client connectivity to new …
Apr 30, 2023 · Hey all, Some details first: Forest/Domain functional level: 2012 R2 (only one domain) 2 x Exchange 2013 CU 23 Servers in a DAG (both on Server 2012) 1 x Exchange …
New Outlook: MAPI / Exchange | Microsoft Community Hub
May 31, 2024 · I don't think microsoft will ever try to add mapi to it because mapi is a "client side" technology that whereas the new outlook is all server side (excluding the html/css rendering).
Recommendation: Enabling Kerberos Authentication for MAPI …
Apr 15, 2011 · MAPI supports Kerberos authentication and the default setting in Outlook 2007 and later is to negotiate the strongest authentication available when not running in Outlook …
OWA Exchange 2016 Error - Something went wrong | Microsoft …
Hi All, Trying to access to owa and receiving this error: A problem occurred while you were trying to use your mailbox. X-ClientId:...
Disable replication in mapi network : | Microsoft Community Hub
Sep 22, 2023 · The MAPI network is the network that is used by Outlook and other clients to connect to Exchange servers. It is also the network that is used by Exchange servers to …
Managing Large Shared Mailboxes in Exchange Online – …
May 15, 2025 · The classic Outlook (Win32) client relies on MAPI and old-style caching behavior, which makes it less ideal for fast-paced shared mailbox environments. What we’re now …