8,015 questions with Exchange | Exchange Server | Management tags

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Exchange 2019 On-Prem: Intermittent EAS MailSubmissionFailed (Code 120) & Auth Conflicts After Cross-Forest Migration

​Hello everyone, ​I'm facing a complex ActiveSync (EAS) issue on our Exchange 2019 On-Premise environment, specifically affecting all users who have been migrated from another forest. ​Environment Context ​We are migrating users from an OLD_DOMAIN to a…

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.
8,015 questions
asked 2025-10-18T10:23:38.5466667+00:00
Kevin G 0 Reputation points
commented 2025-10-25T20:00:52.6133333+00:00
Kevin G 0 Reputation points
1 answer

DAG - Mount Exchange databases according to ActivationPreference does not work.

Good Morning! I am looking for help with DAG management. It is new configuration described below: -2xWindows Server 2025, -2xExchange SE RTM vesion: 15.02.2562.017 - i know it is not newest SU -1xWitnessServer -IP_Less DAG When I turning on…

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.
8,015 questions
asked 2025-10-24T11:35:27.5+00:00
Checior200 0 Reputation points
edited an answer 2025-10-24T13:41:33.47+00:00
Hin-V 7,455 Reputation points Microsoft External Staff Moderator
3 answers

Outlook connecting to Office365 instead of on-premise Exchange server

Hi We have an on-premise Exchange server. The users are running Office 365 and up to a few days ago, Outlook was working fine and the users were connecting to their local Exchange mailboxes. Now they are disconnected from their mailboxes and are…

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.
8,015 questions
asked 2022-08-15T04:19:16.003+00:00
GIC-AUA 51 Reputation points
commented 2025-10-24T11:40:22.5666667+00:00
Raphael Aubert 5 Reputation points
1 answer

how do i assign an application specific password for ms 365 outlook for mac mail

how do i create the application specific password for ms365 for mac Outlook

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.
8,015 questions
asked 2025-10-07T16:22:57.3133333+00:00
John Llamas 0 Reputation points
commented 2025-10-24T03:52:42.54+00:00
Austin-H 5,780 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Exchange Server not syncing emails to Outlook clients properly

Our emails hosted on our on-premises Exchange Server are not syncing correctly to users’ Outlook desktop clients. While Outlook on the web shows all new messages without issue, the desktop app either remains disconnected, displays outdated messages, or…

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.
8,015 questions
asked 2025-10-23T03:22:19.4733333+00:00
Holmes Shanquaneta 40 Reputation points
accepted 2025-10-24T03:01:18.9766667+00:00
Holmes Shanquaneta 40 Reputation points
3 answers

SSL Certificate/ Exchange Server 2019

Per our logs and open SSL test we are showing a self signed cert being issued. Whereas a certificate is already installed from network solutions. How do I fix this?

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.
8,015 questions
asked 2025-10-20T21:08:44.5166667+00:00
Neal Singh 0 Reputation points
commented 2025-10-24T00:27:36.2266667+00:00
Kha-N 3,100 Reputation points Microsoft External Staff Moderator
1 answer

Accepted domains not provisioning after migration in Exchange Online

After completing a migration to Exchange Online, I noticed that newly added accepted domains show as verified in Microsoft 365 but aren’t fully provisioned. Users can’t send or receive emails using the new domain, even though DNS and licensing appear…

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.
8,015 questions
asked 2025-10-22T12:49:26.2166667+00:00
Pitman Donny 0 Reputation points
commented 2025-10-23T14:14:32.7866667+00:00
Steven-N 11,240 Reputation points Microsoft External Staff Moderator
1 answer

How do I get windows classic to enable me use Outlook Exchange 2019 to access my emails

I can no longer set up Outlook on my PC because Outlook classic is no longer available to enable me use exchange 2019 to access my emails

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.
8,015 questions
asked 2025-10-17T13:17:46.49+00:00
Nicholas Atampugre 0 Reputation points
commented 2025-10-22T12:53:40.15+00:00
Kudos-Ng 7,850 Reputation points Microsoft External Staff Moderator
3 answers One of the answers was accepted by the question author.

How to clear AutoComplete in Outlook (Office 365) via GPO and Powershell ?

Hello, I have to clear AutoComplete before and after migration to Exchange Online. I would prefer to create a GPO in order to enable/ disable it. I need a powershell too (working with Exchange 2013). Thanks in advance for your help.

Outlook | Windows | Classic Outlook for Windows | For business
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.
8,015 questions
Windows for business | Windows Client for IT Pros | User experience | Other
asked 2020-07-14T18:25:19.02+00:00
Diego 21 Reputation points
edited an answer 2025-10-22T11:09:56.4866667+00:00
sadia malik 0 Reputation points
4 answers One of the answers was accepted by the question author.

How to build a Local E-mail server?

How to build a Local E-mail server? What hardware and software do I need?

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.
8,015 questions
asked 2025-10-01T19:31:12.44+00:00
Jiaxin Zhang 60 Reputation points
edited a comment 2025-10-21T10:28:04.2433333+00:00
Kha-N 3,100 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Intermittent hybrid mail flow latency in Exchange 2019 and Exchange Online environment

We’re running a hybrid Exchange environment (Exchange Server 2019 on-premises + Exchange Online) and have recently noticed intermittent delays when sending mail from on-premises mailboxes to cloud mailboxes. Messages sometimes take several minutes to…

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.
8,015 questions
asked 2025-10-20T09:55:23.7+00:00
Slater Kinja 20 Reputation points
accepted 2025-10-21T09:15:51.09+00:00
Slater Kinja 20 Reputation points
1 answer

Deleted AD Account, but Cloud Account Did Not Transition to Soft-Delete

The on-premises Active Directory is currently synchronized with Azure AD. After deleting the account on the AD server, the synchronized cloud account did not move to a deleted state.

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.
8,015 questions
asked 2025-10-15T07:40:05.29+00:00
Bogyun Jeon 0 Reputation points
edited a comment 2025-10-20T05:37:16.7933333+00:00
Jack-Bu 4,425 Reputation points Microsoft External Staff Moderator
3 answers One of the answers was accepted by the question author.

in-place discovery export keeps asking for credentials

Hi, In-Place eDiscovery keeps asking for credentials even after assigning the required permissions to the user. Exchange 2013. Is there a command in Powershell to find emails in all the mailboxes having a specific subject and export them to a .pst…

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.
8,015 questions
asked 2023-06-10T23:34:51.9166667+00:00
create share 676 Reputation points
answered 2025-10-18T07:03:26.63+00:00
Juan A. González Escobar 0 Reputation points
2 answers One of the answers was accepted by the question author.

Default signature for shared mailbox

Outlook on Windows lets me choose a default email signature for each mail account, but not for shared mailboxes. Is this feature planned in the future or any other way I can define a default signature for a shared mailbox?

Outlook | Windows | Classic Outlook for Windows | For business
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.
8,015 questions
asked 2023-12-22T14:24:14.12+00:00
ThomasW 65 Reputation points
commented 2025-10-17T00:23:36.21+00:00
Nicholas K 0 Reputation points
2 answers

How do I download the Project desktop App?

We have a license/subscription to Project Plan 3. From what I can understand, this also has a desktop app available. Following MS's instructions, however, just has me downloading Office again and never downloads Project. How can I get the desktop…

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.
8,015 questions
Microsoft Teams | Microsoft Teams for business | Other
asked 2024-10-22T19:21:51.8766667+00:00
Pumpkinboss 15 Reputation points
edited a comment 2025-10-19T04:47:13.6533333+00:00
Anthony Tran 0 Reputation points
2 answers One of the answers was accepted by the question author.

Understanding Microsoft Message-ID Email Header NAMP220.PROD.OUTLOOK

Can someone please explain when MS started this specific NAMP220 server forest and how it is better than legacy MS XChange Servers e.g., NAMPRD005 etc. @Anonymous I would be very thankful for your help.

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.
8,015 questions
asked 2024-11-11T22:18:47.4866667+00:00
131HB1122 20 Reputation points
commented 2025-10-15T20:24:44.19+00:00
claudia garcia 0 Reputation points
2 answers

Autodiscover not working HTTP 401 Unauthorized

Having trouble getting our autodiscover working, looks like it may have broken after the last major CU, but could have been earlier. Exchange 2019 on latest CU, all roles on single server. Did a rebuild of the virtual folder, certificates are all valid,…

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.
8,015 questions
asked 2025-05-06T02:44:30.5866667+00:00
Alex Bedard 0 Reputation points
answered 2025-10-16T21:16:57.35+00:00
Justin Emlay 0 Reputation points
1 answer One of the answers was accepted by the question author.

Licence for Exchange SE

Hello Microsoft Team , i have 3 questions and i hope that , you help me. i want to know : how much is the licence price for Exchange SE ( server licence and CAL licence for Users ) ? Microsoft had told , it come on 1 August . how much is the…

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.
8,015 questions
asked 2025-08-05T07:25:53.4566667+00:00
Pooya Mofrad (Admin) 145 Reputation points
edited a comment 2025-10-16T13:34:11.3366667+00:00
Stephen Lansing 0 Reputation points
1 answer

Exchange SE Certificate won’t bind to SMTP

Hi, I’m setting up a new Exchange Server SE in a hybrid environment and ran into an issue with certificates. Situation On the old server, there is an internal CA certificate (Thumbprint AAAA…) that is still enabled for SMTP. On the new server, I imported…

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.
8,015 questions
asked 2025-10-01T21:08:33.49+00:00
Thomas Waschkies 0 Reputation points
commented 2025-10-17T15:14:28.83+00:00
Austin-H 5,780 Reputation points Microsoft External Staff Moderator
1 answer

Exchange 2019 to Se upgrade failed

We are getting various errors on our Exchange SE deployment. Some concern permissions issues creating the system mailboxes. Also, when attempting to prepareAD, we get unusual local temp errors. Below is an except form the setup logs. [10/10/2025…

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.
8,015 questions
asked 2025-10-13T16:31:55.2933333+00:00
Roger Sinsel 0 Reputation points
commented 2025-10-17T11:46:25.1233333+00:00
Jack-Bu 4,425 Reputation points Microsoft External Staff Moderator