619 questions with Exchange | Exchange Server | Development tags

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How to use Exchange Server Outlook interface in Java SpringBoot?

Hello, I previously asked a similar question, and I thought it was closed. Now, I have a new one, and we're truly unable to resolve it. Please help. Our project background is this: We are a third-party software provider deployed on a client's server. The…

Exchange | Exchange Server | Development
asked 2025-10-22T07:03:42.7433333+00:00
ShuangCoolBoy 20 Reputation points
commented 2025-10-27T14:24:24.55+00:00
Steven-N 11,625 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

What could cause Exchange 2019 services to not start automatically after a reboot, and are there any recommended startup order or dependency adjustments to ensure reliable service initialization?

After rebooting my Exchange Server 2019, several critical services (like Microsoft Exchange Transport and Information Store) fail to start automatically. I have to manually start them from Services.msc or PowerShell each time the server restarts. The…

Exchange | Exchange Server | Development
asked 2025-10-27T10:29:42.92+00:00
Mote Jeffery 40 Reputation points
accepted 2025-10-27T12:19:50.5466667+00:00
Mote Jeffery 40 Reputation points
1 answer One of the answers was accepted by the question author.

Exchange Server 2019 mailbox database fails to mount after reboot

one of our mailbox databases on Exchange Server 2019 fails to mount automatically after a server reboot. The error message in the Event Viewer indicates that the database file is in a “Dirty Shutdown” state. Running eseutil /mh confirms the same, and…

Exchange | Exchange Server | Development
asked 2025-10-26T11:18:09.0366667+00:00
Mote Jeffery 40 Reputation points
accepted 2025-10-27T09:42:59.6733333+00:00
Mote Jeffery 40 Reputation points
1 answer

how to increate mail box size in mail exchange admin portal

how to increate mail box size in mail exchange admin portal

Exchange | Exchange Server | Development
asked 2025-10-22T13:17:29.1933333+00:00
Balamurugan - Admin 0 Reputation points
commented 2025-10-27T09:00:07.5433333+00:00
Michelle-N 7,065 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

How to Convert a Secondary Hierarchy Public Folder Mailbox to Primary Hierarchy in Exchange Admin Center (Exchange 2019)?

I'm running Exchange Server 2019 on-premises with public folders split between one Primary Hierarchy mailbox (on a server to decommission) and multiple Secondary ones. Need to promote a Secondary to Primary without full recreation or heavy downtime,…

Exchange | Exchange Server | Development
asked 2025-10-18T02:18:03.0666667+00:00
Doumbia 40 Reputation points
accepted 2025-10-22T09:39:47.4233333+00:00
Doumbia 40 Reputation points
0 answers

How to use Exchange Server Outlook interface in Java SpringBoot?

Hello, I previously asked a similar question, and I thought it was closed. Now, I have a new one, and we're truly unable to resolve it. Please help. Our project background is this: We are a third-party software provider deployed on a client's server. The…

Exchange | Exchange Server | Development
asked 2025-10-22T07:13:36.7433333+00:00
ShuangCoolBoy 20 Reputation points
1 answer

Request to remove ___domain from organization

I would like to remove my ___domain from an organization

Exchange | Exchange Server | Development
asked 2025-10-14T16:15:31.91+00:00
Arinda Bothma 0 Reputation points
commented 2025-10-20T06:12:40.9366667+00:00
Hani-Ng 4,390 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Migration strategy from Exchange Server 2016 to Subscription Edition Post-End-of-Support (October 2025)

Our organization operates an on-premises Exchange Server 2016 CU23 environment (Version 15.1.2507.41) with 200 mailboxes in a hybrid setup connected to Exchange Online via Azure AD Connect v2.1.15. With the end-of-support for Exchange 2016 on October 14,…

Exchange | Exchange Server | Development
asked 2025-10-18T07:47:48.28+00:00
Holmes Shanquaneta 40 Reputation points
accepted 2025-10-20T02:52:47.7866667+00:00
Holmes Shanquaneta 40 Reputation points
1 answer

i want to uninstall the exchange from the server because i renamed the ___domain so now i want to be deleted from everywhere and install it again in addition i did some steps what this but it is still can not be deleted

we have a problem with installing exchange after we have changed the name of ___domain. To make this clear we have got two servers one for Active directly and the other one for Exchange server. we have already contacted with Microsoft support with tracking…

Exchange | Exchange Server | Development
asked 2025-10-18T07:41:40.36+00:00
hamza h10 0 Reputation points
commented 2025-10-20T00:26:03.5966667+00:00
Austin-H 5,945 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

EWS Certificate-Based Authentication – 401 Unauthorized Despite IIS Certificate Mapping

Hi, I am trying to set up Exchange Web Services (EWS) with certificate-based authentication (CBA) in a lab environment. As, Previously I was told that we can support CBA over IMAP/SMTP. I have two VMs in the same VNET: AD-VM → Active Directory Domain…

Exchange | Exchange Server | Development
asked 2025-10-10T07:58:52.42+00:00
Gourav Kumar 60 Reputation points
edited an answer 2025-10-16T06:15:59.23+00:00
Kudos-Ng 8,245 Reputation points Microsoft External Staff Moderator
1 answer

upgrading from Exchange Server 2019 Standard to Exchange Server SE RTM Without SA

Currently using Exchange Server 2019 Standard Edition on-premises without Software Assurance. Is it possible to upgrade to Exchange Server SE RTM on-premises without Software Assurance? If yes, please share the process. Additionally, what is the cost of…

Exchange | Exchange Server | Development
asked 2025-09-26T09:16:34.4933333+00:00
RAMESHWAR PRASAD SHARMA 0 Reputation points
edited a comment 2025-10-01T08:28:00.1866667+00:00
Hin-V 7,605 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Cannot Access Email Account on Browser, Outlook App, Desktop or iOS HELP

The following error is appearing accross all my platforms when I try to access this email account I use for both personal and business: UTC Date: 2025-09-11T21:48:08.480Z Client Id: REMOVE PII Session Id: b52c9061-a570-4124-8a42-0049ad186f63 Client…

Exchange | Exchange Server | Development
asked 2025-09-12T01:13:32.82+00:00
Caitlyn LeBlanc 40 Reputation points
edited the question 2025-09-30T14:31:30.73+00:00
Tammy-Ng 4,530 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Exchange 2019 blocked by EXO for missing ProxyLogon Patches after Jan 2025 rules

Since Jan 2025, our on-premises Exchange 2019 (CU14, no SU) is throttled by Exchange Online, causing intermittent inbound mail failures (550 5.7.1: Relay access denied). Event ID 1709 in Application Log points to “Persistently Vulnerable Server” block…

Exchange | Exchange Server | Development
asked 2025-09-22T07:39:57.9133333+00:00
Madril Johanna 40 Reputation points
commented 2025-09-23T12:56:26.53+00:00
Madril Johanna 40 Reputation points
1 answer One of the answers was accepted by the question author.

How can I create an automated PowerShell script to diagnose Bookings mailboxes, pulling Graph data, staff logs, validations, and exporting to CSV/Excel?

Our firm about to manage 200+ weekly client appointments across mailboxes (5-10 staff each) However staff face permission denials when updating bookings, and confirmation emails fail, causing no-shows. Tenant settings, OWA policies, and domains are…

Exchange | Exchange Server | Development
asked 2025-09-12T06:24:31.5866667+00:00
Imran Qureshi 160 Reputation points
accepted 2025-09-17T09:05:50.0666667+00:00
Imran Qureshi 160 Reputation points
0 answers

Exchange SE In place upgrade completed, Receive Connectors do not allow Email flow.

Exchange Health Checker version 25.09.08.1801 Exchange Information Name: MAIL-SERVER.DELFIA.COM Generation Time: 09/12/2025 16:21:01 Version: Exchange SE RTM Sep25HU Build Number: 15.02.2562.027 Latest Install Time (SU/CU): 09/12/2025…

Exchange | Exchange Server | Development
asked 2025-09-13T15:39:39.0166667+00:00
Kenneth J. Filadelfia 0 Reputation points
commented 2025-09-13T15:47:18.8133333+00:00
Kenneth J. Filadelfia 0 Reputation points
0 answers

Config MetaCached DB not working on Exchange 2019

Hi I'm configuring metacache databases on our new Exchange 2019 servers. We've got 2 seperate disks available for them. I used the official Microsoft documentation, but it seems to be missing some important…

Exchange | Exchange Server | Development
asked 2025-05-21T12:19:00.5166667+00:00
Goossens Dimitri (Admin) 0 Reputation points
commented 2025-09-12T12:58:23.85+00:00
Med 0 Reputation points
1 answer One of the answers was accepted by the question author.

How is the default language/timezone is decided for Shared Mailboxes?

Hello, For User Mailboxes, the use is prompted when they sign in for the first time to OWA to decide their language and time zone. This decides the language they have for their Default folders (Inbox, Spam...) When they use Outlook Desktop, I assume…

Exchange | Exchange Server | Other
Exchange | Exchange Server | Other
A robust email, calendaring, and collaboration platform developed by Microsoft, designed for enterprise-level communication and data management.Miscellaneous topics that do not fit into specific categories.
1,513 questions
Exchange | Exchange Server | Development
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.
8,016 questions
Exchange | Hybrid management
Exchange | Hybrid management
The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.
2,352 questions
Exchange | Other
Exchange | Other
A powerful email and collaboration platform developed by Microsoft, designed to support enterprise-level communication and productivity. Miscellaneous topics that do not fit into specific categories.
762 questions
asked 2025-02-12T13:45:17.5833333+00:00
Said A 951 Reputation points
accepted 2025-09-11T21:28:48.78+00:00
Said A 951 Reputation points
1 answer

Automating HTML Email Reports with Attachments via PowerShe

In our organization, we have an automated reporting process that runs nightly on a Windows server using PowerShell scripts. As part of this workflow, we generate both an HTML-formatted summary (for better readability) and a few file attachments (like CSV…

Exchange | Exchange Server | Development
asked 2025-09-08T10:16:08.0333333+00:00
Trillas 100 Reputation points
edited a comment 2025-09-11T14:08:26.0266667+00:00
Kha-N 3,175 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Unable to Authenticate EWS Access – invalid_client Error Due to Missing client_assertion or client_secret

We are attempting to access Exchange Online mailboxes programmatically using EWS with modern authentication (via MSAL.NET), but are encountering the following error when acquiring an access token: MSAL.NetCore.4.72.1.0.MsalServiceException: ErrorCode:…

Exchange | Exchange Server | Development
asked 2025-09-11T06:58:52.13+00:00
Neeraj Bhatia 60 Reputation points
accepted 2025-09-11T13:24:48.2433333+00:00
Neeraj Bhatia 60 Reputation points
1 answer One of the answers was accepted by the question author.

operations fail with an intermittent 500 Internal Server Error

We’re developing a custom service account integration with Exchange Online to send and archive messages on behalf of project mailboxes. The app is registered in Azure AD with EWS.AccessAsUser.All and Mail.ReadWrite application permissions, and global…

Exchange | Exchange Server | Development
asked 2025-09-10T13:14:41.4233333+00:00
Hamed Amadli, Kasmir 40 Reputation points
accepted 2025-09-10T14:29:06.6933333+00:00
Hamed Amadli, Kasmir 40 Reputation points