2,245 questions with Microsoft Exchange Hybrid Management tags

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HCW8001 Error: Unable to Determine the Tenant Routing Domain

Encountering the error HCW8001 Unable to determine the Tenant Routing Domain while running the Hybrid Configuration Wizard (HCW). Below are the relevant log entries observed during the process: 2025.03.05 15:09:31.633 10271 [Client=UX,…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 05 Mar 2025, 16:37
Jonathan 0 Reputation points
2 answers

HCW Error - Register Agent

Hybrid Configuration Wizard always stops with error at "Register Agent". Following lines are found in the Log-File: 2025.01.08 16:07:30.742 10333 [Client=UX, fn=SendAsync, Thread=14] FINISH Time=290,0ms Results=NotFound…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 09 Jan 2025, 09:21
Jochen Erhard 0 Reputation points
answered 05 Mar 2025, 14:53
Jochen Erhard 0 Reputation points
1 answer

How to fix Office 365 Hybrid Configration Wizard cannot sign into M365 ?

We are running Exchange 2016 on server 2016 and have al current patches installed. When trying to run the Office 365 Hybrid Configration Wizard, it fails to sign into M365. The log files gives the following details: 025.02.03 16:06:56.311 ERROR 10251…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 03 Feb 2025, 21:43
Rail_IT 0 Reputation points
commented 05 Mar 2025, 05:17
Alex Zhang-MSFT 5,710 Reputation points Microsoft External Staff
2 answers

O365 Sync Issues After On-Premises Exchange Decommissioning

In a transition from a Hybrid environment to nearly full cloud usage, the on-premises Exchange was shut down due to security concerns, following documentation and recommendations while leaving the schema intact. Currently facing issues managing user…

Microsoft 365
Microsoft 365
Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line.
5,765 questions
Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
6,905 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 13 Feb 2025, 21:44
Anthony Shaw 0 Reputation points
commented 05 Mar 2025, 05:15
Alex Zhang-MSFT 5,710 Reputation points Microsoft External Staff
2 answers

Exchange server 2013 and Microsoft 365-Hybrid mode

Hi Everyone, We intend to migrate from on-premises Exchange 2013 to Microsoft 365. Can we maintain a hybrid mode with an Exchange server 2013 and move 40-50 mailboxes to O365 for testing for up to a year? (The ultimate goal is to migrate all mailboxes to…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 20 Feb 2025, 20:42
Amir-G 41 Reputation points
commented 05 Mar 2025, 05:13
Alex Zhang-MSFT 5,710 Reputation points Microsoft External Staff
1 answer

HSTS missing

Hi all, I have an Exchange 2016 hybrid environment and have identified the following vulnerability. Please suggest how to fix it.

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 23 Feb 2025, 19:26
Roger Roger 6,841 Reputation points
commented 05 Mar 2025, 05:13
Alex Zhang-MSFT 5,710 Reputation points Microsoft External Staff
2 answers

SPF and DKIM is faling as emails are getting forwarded to one Cloud Anti-Phisihing Solution

Hello, We are using EOP as our email Gateway and once internet email reaches to EOP we are forwarding that internet email to one Cloud Anti-Phisihing Solution platform and then again email comes back to EOP but due to this routing when EOP check the SPF…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 24 Feb 2025, 09:16
raj a 316 Reputation points
commented 05 Mar 2025, 05:13
Alex Zhang-MSFT 5,710 Reputation points Microsoft External Staff
2 answers

Re-install Exchange 2016 after system corruption

Hi All, Before we open a pay-per-incident(s) MS ticket, I thought I'd lob this scenario out to the community. Our sister organization has a lot of technical debt, both hardware and & software. We needed to get them on Exchange Online, and to do…

Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,448 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,813 questions
Microsoft Exchange
Microsoft Exchange
Microsoft messaging and collaboration software.
688 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 12 Feb 2025, 16:37
Mueller, Jim 1 Reputation point
answered 03 Mar 2025, 16:36
Mueller, Jim 1 Reputation point
1 answer

unable to add additional email address

Hi All, I am using an Exchange 2016 hybrid environment. We create users on-prem and then migrate them to Exchange Online. I have a user, user1@contoso.com, and I want to add an additional email address, user1-temp@contoso.com, to this user. When I…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 02 Mar 2025, 18:15
Glenn Maxwell 12,456 Reputation points
answered 03 Mar 2025, 06:59
Bruce Jing-MSFT 9,765 Reputation points Microsoft External Staff
1 answer One of the answers was accepted by the question author.

unable to delete a DL.

Hi All I have a distribution list (DL) in Exchange Online. However, when I search for it in the Exchange Admin Center or Microsoft 365 Admin Center, I cannot find it. I can see the DL in PowerShell, but not in the GUI. Get-EXORecipient -ResultSize…

Microsoft Exchange Online
Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,777 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,813 questions
Microsoft Exchange
Microsoft Exchange
Microsoft messaging and collaboration software.
688 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 16 Feb 2025, 19:15
Glenn Maxwell 12,456 Reputation points
accepted 02 Mar 2025, 17:48
Glenn Maxwell 12,456 Reputation points
2 answers One of the answers was accepted by the question author.

Security update for Exchange

Hi All, I am using an Exchange 2016 hybrid environment. My Exchange servers are running on Exchange Server 2016 CU23 Nov24SUv2. We have a third-party vulnerability scanning tool, and it has detected the following vulnerability on my Exchange…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 23 Feb 2025, 15:39
Glenn Maxwell 12,456 Reputation points
accepted 02 Mar 2025, 17:47
Glenn Maxwell 12,456 Reputation points
2 answers One of the answers was accepted by the question author.

unable to install CU

Hi All, I am trying to upgrade Exchange Server 2016 to the latest CU. I am currently on Exchange Server 2016 CU23 Nov23SU and attempting to upgrade to Exchange Server 2016 CU23 Nov24SUv2. However, I am encountering the following error. Please guide me.

Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,448 questions
Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,777 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,813 questions
Microsoft Exchange
Microsoft Exchange
Microsoft messaging and collaboration software.
688 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 16 Feb 2025, 19:03
Glenn Maxwell 12,456 Reputation points
accepted 02 Mar 2025, 17:46
Glenn Maxwell 12,456 Reputation points
3 answers One of the answers was accepted by the question author.

issue of hiding a user from global address list

I have a hybrid Exchange environment with single Exchange 2013 and all mailboxes in M365. I simply liked to use Exchange PowerShell to hide a user from the global address book but received the error. Please advise. Tried: Set-Mailbox -Identity…

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,777 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 15 Dec 2022, 22:00
Calvin Goodman 86 Reputation points
answered 28 Feb 2025, 19:03
Shaun Healy 0 Reputation points
2 answers

"Is a hybrid cloud approach (keeping PHI on-prem while using Microsoft 365 for apps) a recommended and HIPAA-compliant strategy for hospitals moving toward EMRs?"

We are a hospital and school organization that currently operates an on-premises infrastructure, including Exchange servers and all internal applications. Our CEO is interested in moving to the cloud, particularly Microsoft 365 for apps, and potentially…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 31 Jan 2025, 22:05
Lashon Cortez 0 Reputation points
edited a comment 28 Feb 2025, 02:07
Alex Zhang-MSFT 5,710 Reputation points Microsoft External Staff
1 answer One of the answers was accepted by the question author.

Exchange Hybrid Migration | When to apply license

Hi all, I had two questions? Is it safe to apply a license when a mailbox has been synced and is suspended waiting for the final cutover? For example the mailbox is being migrated, its now fully synced and suspended, can i apply the license at that point…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 27 Feb 2025, 16:22
Raymond Brooks 151 Reputation points
commented 28 Feb 2025, 01:41
Alex Zhang-MSFT 5,710 Reputation points Microsoft External Staff
3 answers

Connect-ExchangeOnline: Write-ErrorMessage : Expired or Invalid pagination request. Default Expiry time is 00:30:00

I wrote a script a while back that gets the the UserPrincipalName, DisplayName, LastLogonTime, CreationTime, Inactive Days, MailboxType, AssignedLicenses, ItemCount, MB Size, and Roles from MSOnline and Exchange Online. It works fine on one server and my…

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,777 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
Windows Server PowerShell
Windows Server PowerShell
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.PowerShell: A family of Microsoft task automation and configuration management frameworks consisting of a command-line shell and associated scripting language.
5,628 questions
asked 26 Sept 2022, 17:20
Dane Briggs 281 Reputation points
commented 27 Feb 2025, 12:13
Oliver 31 Reputation points
1 answer

How to fix error Error: CommunicationErrorTransientException:Could not establish trust relationship for the SSL/TLS secure channel with authority

we are running a ybrid environment , we create user mailboxes on our on prem exchange and than migrate the mailbox to exchange online , we have been doing that succesfully up until last week , when it started fsiling for all mailboxes , it stay for the…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 21 Feb 2025, 13:03
Paulina Lukas 0 Reputation points
commented 27 Feb 2025, 08:55
Kaiyue Gong (Shanghai Wicresoft Co Ltd) 390 Reputation points Microsoft External Staff
2 answers

Problème connexion compte O365 Outlook

Bonjour, J'ai un problème chez un client où nous avons fait une migration Exchange Server 2010 vers Office 365 dernièrement et il s'avère que depuis quelques jours j'ai 3-4 personnes qui peuvent plus ouvrir leur Outlook avec l'erreur suivante : J'ai…

Microsoft 365
Microsoft 365
Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line.
5,765 questions
Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,448 questions
Outlook
Outlook
A family of Microsoft email and calendar products.
4,503 questions
Windows 365 Business
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 12 Feb 2025, 15:47
Benjamin GENETELLI 0 Reputation points
commented 27 Feb 2025, 06:36
T.Thierryk 0 Reputation points
3 answers

On premise 2016 to exchange online

Hi all, i have a hosted exchange 2016 with 22 tenanats that I need to migrate. I don't want to install AAD connect or hybrid. Is there a way to do it manually by importing a CSV file? Or do a cutover with selective mailboxes?

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 18 Feb 2025, 00:09
Ella Taylor 60 Reputation points
answered 27 Feb 2025, 04:32
Amit Singh 5,146 Reputation points
1 answer One of the answers was accepted by the question author.

Delivery has failed to these recipients or groups

Your message couldn't be delivered. The Domain Name System (DNS) reported that the recipient's domain does not exist. Contact the recipient by some other means (by phone, for example) and ask them to tell their email admin that it appears that their…

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,245 questions
asked 25 Feb 2025, 16:34
Ryan Jabri 40 Reputation points
commented 26 Feb 2025, 14:51
Ryan Jabri 40 Reputation points