7,946 questions with Exchange | Exchange Server | Management tags
For no reason at all, when everyone connects to exchange in outlook, a pop-up box appears asking them to enter their credentials?
We have three exchange 2016 cu23, namely ex01, ex02 and ex03. We have four databases, namely db01, db02, newdb01 and newdb02 db01 and db02 are mounted on ex01. The priority of ex01 is 1, that of ex02 is 2, and that of ex03 is 3 newdb01 and newdb02…
Exchange | Exchange Server | Management
why are my mail messages suddenly being rejected as spam?
Diagnostic information for administrators: Generating server: PH8PR20MB6366.namprd20.prod.outlook.com ******@gmail.com Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)' Original message…
Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management
The exchange 2016 rule does not take effect
We have a rule that all emails to recipients outside the organization will be deleted We have a system that sends emails through the exchange 2016 server. We found that if the mailbox quota used by the system is full, the emails sent by the system will…
Exchange | Exchange Server | Management

OnPrem Exchange Server
Inherited a new environment and trying to make sense of things. We are Exchange Online; there are no hybrid setup settings in either online or the on prem exchange server. But we do use Azure AD for AD sync. New users, shared mailboxes, etc do not show…
Exchange | Exchange Server | Management
Exchange Exclusion
Hi All Can anyone help me with the list of files and folders that need to be excluded for Exchange 2019 in the antivirus? I am using CrowdStrike
Exchange | Exchange Server | Management
Exchange 2019 switching from self-signed to 3rd party certificate
Exchange 2019 Cu14. Office 2016/2019 Outlook profiles. Phone email client profiles Currently using a self-signed certificate. Are there any known issues regarding the switch? Broken Outlook/phone client profiles, etc.? Or will Outlook and phone clients…
Exchange | Exchange Server | Management
Cant edit contacts in outlook 365 via search people 3dots doesn't resolve
I have Microsoft Exchange version of Outlook on two computers both using Windows 11 64bit, with same version update. They appear identical and both sync emails, contacts, calendar etc. On both machines "Search people" finds same contacts,…
Exchange | Exchange Server | Management
Encountered an issue while installing Exchange Server 2016 CU23 HU16
My environment is Exchange Server 2016 CU23 Nov24SUv2. When installing HU16: May 29, 2025 (KB5057653), I encountered the following issue: I tried retrying, but it didn’t work. Can I click Ignore to continue the installation?
Exchange | Exchange Server | Management

Exchange Server 2016 CU23 HU16 queue viewer crash with error
可以翻成: My environment is Exchange Server 2016 CU23 HU16, and is in Hybrid mode with Exchange Online. When I open Queue Viewer, I encounter the following error message. I found the following two commands: .\ConfigureExchangeHybridApplication.ps1…
Exchange | Exchange Server | Management
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
"Connect to the server to view them" error issues with personal and shared mailboxes in Outlook client ( Office 365 - Windows 10)
Hi everyone! I'm working in a fairly large environment providing M365 support for users and have been seeing a lot of support tickets regarding this error message. We started by migrating users personal mailboxes to Exchange and then about a month…
Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management
Microsoft 365 and Office | Development | Microsoft 365 Publishing
Getting error while deleting user contact from Echange online 365
I had a user in my Exchange online 365. I wanted to delete the user mailbox as well as contact. The mailbox was successfully deleted but the contact is still showing in the contact list. I have tried multiple times to delete the contact but an error…
Exchange | Exchange Server | Other
Exchange | Exchange Server | Management
error code 500121 on my school account?
no matter what i do cannot get my school account logged in on my auth app. have googled and tried every video error code 500121 is all error i get.
Microsoft 365 and Office | Development | Office JavaScript API

Exchange | Exchange Server | Management
Microsoft Copilot | Microsoft 365 Copilot | Development
Microsoft Security | Microsoft Authenticator
Microsoft Teams | Microsoft Teams for business | Other
Need a complete Portlist for an Exchange 2016/2019 DAG Environment for Windows Adv Firewall Configuration
Hello Folks, i need a complete Portlist for an Exchange 2016/2019 DAG Environment to setup Windows Adv. Firewall Configuration. Pls not only Exchange related (Mail-Flow Ports) --> i need a complete List with all needed Ports. Thx in advance
Exchange | Exchange Server | Management
Exchange SE Management Shell & Toolbox HTTPS Connectivity Challenges (Post-Upgrade to Server 2025)
📝 Question: I’m investigating an Exchange Management Shell and Toolbox connectivity issue following an upgrade to Exchange Server Subscription Edition (SE). 🔧 Environment Details: Original hybrid deployment: Exchange 2016 running on Windows Server…
Exchange | Exchange Server | Management
Exchange not accepting valid password
One of our users account got locked out. We changed their AD password. Now Exchange refuses to let them log in. Outlook always prompts for credentials, and when entered rejects them. OWA says credentials are incorrect. We have the creds in a notepad…
Exchange | Exchange Server | Management
Exchange Sever monitor
I need a way to monitor and read emails from a specific mailbox on an internal Microsoft Exchange Server within my organization. This includes the ability to access the sender's email address, subject line, message content, and download any attachments…
Exchange | Exchange Server | Management
change a display name in microsoft exchange without changing the email address
How do i change the display name of an email without changing the address.
Exchange | Exchange Server | Management
I dont have answer for a M365 ticket created a month ago
Hello, we opened a support ticket (#2506240040013589) with Microsoft over a month ago, but unfortunately, we have not received any response or update. The case is critical for our operations, and the lack of follow-up is now impacting our ability to…
Exchange | Exchange Server | Management
Exchange 2019 CU15 installed on Server 2025. Error loading Exchange Managment Shell
Both servers in the cluster have broken EMS. Everything else seems to be working alright. Nothing I've found for fixes seem to be working.