596 questions
596 questions with Exchange | Exchange Server | Development tags
0 answers
Cannot fetch internet headers for an email item when replying/forwarding from the "Sent" folder of a user
We have an Office.js add-in running in Exchange Server. When a user sends an email using our add-in, we add an internet header to the email item. When a user then tries to reply to/forward that email, our add-in tries to fetch the internet header set…
Exchange | Exchange Server | Development
asked 2025-08-08T12:24:27.9133333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(70.4, 91%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERK%3C/text%3E%3C/svg%3E)
Raghunandan Kumbhar
20
Reputation points
commented 2025-08-10T00:25:32.1466667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(294.40000000000003, 68%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECB%3C/text%3E%3C/svg%3E)
Cara Batalkan Pinjaman Shopee Spinjam Spinjam
0
Reputation points
1 answer
Not receiving <InReplyTo> tag in EWS GetItem response if mail subject changed in reply
I have an add-in that I run in Exchange Server 2019. When replying to an email, my add-in requires some information related to the parent email. For this, I use the EWS GetItem API. In the response, I get an <InReplyTo> tag, where I find…
Exchange | Exchange Server | Development
596 questions
asked 2025-07-22T11:46:21.5066667+00:00
Raghunandan Kumbhar
20
Reputation points
commented 2025-08-07T13:06:02.42+00:00
Raghunandan Kumbhar
20
Reputation points
1 answer
Office.js dialog box 'X' close button missing when using Exchange Server in an offline environment
I have an add-in which I am running in an Exchange Server 2019 setup. The setup is completely offline, so I am hosting Office.js assets locally. When I try to open an Office.js dialog, the 'X' close button at the top right corner of the dialog box is…
Exchange | Exchange Server | Development
596 questions
asked 2025-07-22T10:37:42.6333333+00:00
Raghunandan Kumbhar
20
Reputation points
commented 2025-08-07T13:03:10.6433333+00:00
Raghunandan Kumbhar
20
Reputation points
1 answer
550 5.7.54 SMTP; Unable to relay recipient in non-accepted domain Error
Hello everyone and thanks for the help in advance. I am developing a C# .Net 9 Windows Application that uses the SmtpClient to send emails. I have an on premises Exchange Server 2019 that I want the application to connect to for sending emails. I…
Exchange | Exchange Server | Development
596 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(208, 34%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EK%3C/text%3E%3C/svg%3E)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(297.6, 3%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EVV%3C/text%3E%3C/svg%3E)
1 answer
How do I use all the features of outlook classic including calendars and tasks with a non outlook email?
I Have a non-outlook email address, for example, a gmail or a domain linked to my business. I want to use the old Outlook classic as I can make bespoke forms in tasks. The problem is, my email address won't allow sync to occur and says (next to calendar…
Exchange | Exchange Server | Development
596 questions
asked 2025-07-22T12:54:09.1466667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(35.2, 96%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJA%3C/text%3E%3C/svg%3E)
Julie Alfrey
0
Reputation points
commented 2025-07-28T14:11:51.6766667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(54.400000000000006, 70%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETN%3C/text%3E%3C/svg%3E)
Tammy-Ng
1,970
Reputation points Microsoft External Staff
Moderator
1 answer
One of the answers was accepted by the question author.
How to configure Exchange Server 2019 for hybrid deployment with Office 365?
How to configure Exchange Server 2019 for hybrid deployment with Office 365? Body: Hello, I am setting up an Exchange Server 2019 environment and want to configure a hybrid deployment with Office 365. Could you please guide me through the key steps for…
Exchange | Exchange Server | Development
596 questions
asked 2025-07-20T15:34:43.6633333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(38.4, 42%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGN%3C/text%3E%3C/svg%3E)
GHAZANFAR NAQUI
20
Reputation points
accepted 2025-07-23T09:35:26.0766667+00:00
GHAZANFAR NAQUI
20
Reputation points
1 answer
One of the answers was accepted by the question author.
Office.js add-ins process an email twice after undo-ing mail send and sending again
I have an Office.js on-send add-in, which I am running in an Exchange server. I have enabled the "Undo send" option in user settings. When I send the mail, the mail gets processed by my add-in. The issue is that if I undo the send of that…
Exchange | Exchange Server | Development
596 questions
asked 2025-07-22T11:03:53.03+00:00
Raghunandan Kumbhar
20
Reputation points
accepted 2025-07-23T06:39:38.2166667+00:00
Raghunandan Kumbhar
20
Reputation points
0 answers
Unable to Add Exchange Server to DAG – Cluster Join Timeout & ReplServiceNotRunningOnNode Errors
Hi Expertise, I’m encountering issues while attempting to add a newly deployed mailbox server to an existing DAG in our Exchange Server 2016 on-premises environment. Below is a detailed overview of our environment and the problem scenario. Environment…
Exchange | Exchange Server | Development
596 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(76.8, 72%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ED%3C/text%3E%3C/svg%3E)
1 answer
One of the answers was accepted by the question author.
How to trace Exchange Actionable Message Action.Execute
We're setting up Actionable Messages for the corporate. While being able to deliver and view actionable emails, the Action.Execute doesn't hit the target url(s). A while ago it was still possible to use the Action.Http where you could set the URL as a…
Exchange | Exchange Server | Development
596 questions
asked 2025-07-13T15:09:14.57+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(313.6, 0%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBZ%3C/text%3E%3C/svg%3E)
Barak Zehavi --CNTR
20
Reputation points
accepted 2025-07-14T06:09:40.43+00:00
Barak Zehavi --CNTR
20
Reputation points
0 answers
Active directory server <FQDN> is not available. Error message: Active directory response: A local error occurred. caused DC replication issue.
Windows DC replication error Hi, is anyone able to help me with an issue regarding DC replication? I believe the problem started after restoring snapshots on ESXi. I was troubleshooting our on-premise Exchange mailbox and attempted to restore snapshots…
Exchange | Exchange Server | Development
596 questions
asked 2025-07-01T17:48:47.5733333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(288, 93%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJS%3C/text%3E%3C/svg%3E)
Jeron Santos
0
Reputation points
asked 2025-07-01T17:48:47.5733333+00:00
Jeron Santos
0
Reputation points
2 answers
Exchange Server migration problem
We are approaching for Exchange server migration from EX2016 to EX2019. Both environment applied for the latest CU. One question is when user are migrate from EX2016, once migration complete, their desktop will continuously prompt the login…
Exchange | Exchange Server | Development
596 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(153.6, 4%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETK%3C/text%3E%3C/svg%3E)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(195.2, 61%, 28%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETT%3C/text%3E%3C/svg%3E)
0 answers
What API requirement set does Exchange SE Support?
What API requirement set does Exchange SE Support? Does it just match Exchange 2019 or is there an improvement?
Exchange | Exchange Server | Development
596 questions
asked 2025-06-27T16:23:25.8866667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(83.2, 59%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAB%3C/text%3E%3C/svg%3E)
Andrew Bell (andrebel)
0
Reputation points
asked 2025-06-27T16:23:25.8866667+00:00
Andrew Bell (andrebel)
0
Reputation points
1 answer
Connect-OrganizationAddInService using Entra ServicePrincipal ID
I am trying to find if someone has successfully done this, basically automatize the deployment of an Add-in to Office 365 Client Secret: "1111111111111111111" (This is a secret that should be protected and not shown, I am having a look how to…
Exchange Online
Exchange Online
A Microsoft email and calendaring hosted service.
6,309 questions
Exchange | Exchange Server | Development
596 questions
Windows for business | Windows Server | User experience | PowerShell
asked 2024-04-25T20:01:49.8666667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 74%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJP%3C/text%3E%3C/svg%3E)
Juan Perez
0
Reputation points
commented 2025-05-21T15:36:34.28+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(147.20000000000002, 93%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDZ%3C/text%3E%3C/svg%3E)
David ZELL
0
Reputation points
1 answer
One of the answers was accepted by the question author.
schema upgrade
Hi all, I am using an Exchange 2016 hybrid environment, and my Exchange 2016 server is running the latest Cumulative Update (CU). Since Microsoft does not support an in-place upgrade from Exchange 2016 to Exchange 2019, I plan to set up a new Exchange…
Exchange | Exchange Server | Development
596 questions
asked 2025-04-29T06:33:30.7466667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(137.6, 72%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERF%3C/text%3E%3C/svg%3E)
Rising Flight
5,256
Reputation points
accepted 2025-05-27T09:46:46.9+00:00
Rising Flight
5,256
Reputation points
2 answers
/DoNotEnableEP parameter not recognised when install CU14 (Exchange 2019)
Hi All, I have a similar question: when I run Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataOFF /Mode:Upgrade /DonotEnableEP on Exchange 2019 CU14, it comes back with an error saying it does not recognise the /DonotEnableEP parameter. I have…
Exchange | Exchange Server | Development
596 questions
asked 2025-04-30T16:02:10.64+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(176, 62%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESM%3C/text%3E%3C/svg%3E)
Shana Miah
0
Reputation points
commented 2025-05-28T01:47:11.2666667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(259.20000000000005, 34%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECT%3C/text%3E%3C/svg%3E)
Camila Th
1,915
Reputation points Microsoft External Staff
Moderator
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
596 questions
asked 2025-05-21T12:19:00.5166667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(198.4, 84%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGD%3C/text%3E%3C/svg%3E)
Goossens Dimitri (Admin)
0
Reputation points
asked 2025-05-21T12:19:00.5166667+00:00
Goossens Dimitri (Admin)
0
Reputation points
0 answers
Exchange Server 2019
Hi All, I am currently using Exchange Server 2016 and planning to upgrade to Exchange Server 2019. My existing environment consists of two Exchange 2016 servers (Server01 and Server02). I have provisioned two new Exchange 2019 servers (Server03 and…
Exchange | Exchange Server | Development
596 questions
asked 2025-05-23T06:13:46.0466667+00:00
Rising Flight
5,256
Reputation points
asked 2025-05-23T06:13:46.0466667+00:00
Rising Flight
5,256
Reputation points
0 answers
Exchange 2019 Outgoing mail to gmail failure due to SPF record error
Dear Sir, Customer has an Exchange 2019 organization with 2 Exchange servers (Server name: Ex1 & Ex2) in 1 organization. Email has only 1 domain: domain1.com. They encountered an SPF return error message when the send out email outgoing from ex2…
Exchange | Exchange Server | Development
596 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(227.2, 34%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJT%3C/text%3E%3C/svg%3E)
0 answers
VM SKU type for exchange
Hi All I am currently using an Exchange 2016 Hybrid environment, with the Exchange 2016 VMs hosted on Azure (VM SKU: D8s v3). I am planning to migrate to Exchange 2019 by provisioning new Exchange 2019 servers and decommissioning the existing Exchange…
Exchange | Exchange Server | Development
596 questions
asked 2025-06-07T13:30:01.2533333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(179.20000000000002, 7.000000000000001%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGM%3C/text%3E%3C/svg%3E)
Glenn Maxwell
12,901
Reputation points
asked 2025-06-07T13:30:01.2533333+00:00
Glenn Maxwell
12,901
Reputation points
1 answer
One of the answers was accepted by the question author.
Email delivery status notification with MailKit/Mimekit
Hello, We are successfully sending emails to our partner organization, which is hosted on Office 365. The partner has configured an incoming Mail Flow Connector and corresponding rule to allow emails from our domain. We're using MailKit within our .NET…
Exchange | Exchange Server | Development
596 questions
asked 2025-06-17T05:16:58.4466667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(316.8, 38%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDK%3C/text%3E%3C/svg%3E)
Dharmaraj Kurle
20
Reputation points
accepted 2025-06-26T13:10:28.88+00:00
Dharmaraj Kurle
20
Reputation points