Outlook Connectivity with MAPI over HTTP | Microsoft Community Hub
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 requirements. …
Understanding how Outlook, CDO, MAPI, and Providers work together
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 set of …
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 one of the …
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).
Exchange 2013/2019 coexistence and client connectivity to new 2019 ...
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 2019 CU 12 server …
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:...
Recommendation: Enabling Kerberos Authentication for MAPI Clients
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 Anywhere mode. In …
Managing Large Shared Mailboxes in Exchange Online – Performance ...
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 considering: Should …
Primer: Using the MFCMAPI Utility to See Inside Exchange Online ...
Oct 27, 2023 · The MFCMAPI utility is of great help to Microsoft 365 tenant administrators who want to understand the data apps store in Exchange Online mailboxes. An...
Checklist for Troubleshooting Performance Related issues in Exchange ...
May 31, 2016 · Some of relatively common and difficult issues we see in support are related to client connectivity to Exchange.