1,456 questions with Exchange | Exchange Server | Other tags
Can't login account on Outlook App. Facing "An error occurred during authentication. Please try again later."
We are experiencing an issue with logging into Exchange On Premises ( Exchange Server 2013/2019) email on the Outlook app for both Android and iOS. All users who are accessing their accounts for the first time or relogging after logging out are…
Exchange | Exchange Server | Other
Outlook | Windows | Classic Outlook for Windows | For business
microsoft 365 - Outlook will not connect to server after windows update
Outlook will not connect to server immediately after windows update. I can now connect to Office 365 but states my account does not have permission to view or manage
Exchange | Exchange Server | Other
Outlook says to view more messages i need to click on the link for Microsoft Exchange
No results even though Outlook says there are four items on the server. Followed these instructions: Open Outlook > Click File > Account Settings > Account Settings. Click the Exchange or Microsoft 365, and then click Change. Under Offline…
Exchange | Exchange Server | Other
my outlook doesn't work on phone and browsers, error 401, how to fix it?
UTC Date: 2025-07-10T09:28:04.885Z Client Id: **PII removed** Session Id: **PII removed** Client Version: 20250704003.03 BootResult: fail Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined err: Error: 401 esrc:…
Exchange | Exchange Server | Other
I have been locked out of my personal email account for a week, how can I access it again?
I have been locked out of my email account for a week and have submitted the security verification form but still haven't heard back. Is there anything else I can do? I need to access my emails and I don't know what more to do Thank you, Marie
Exchange | Exchange Server | Other
Cleanup from issues experienced with Exchange Server 2019 CU15 PrepareSchema and PrepareAD
Over this last weekend, I decided to run the PrepareSchema and PrepareAD steps for CU15 since, up until now, it has been a fairly quick and straightforward process. Both seemed to complete without issue, but then I noticed that repadmin was reporting…
Exchange | Exchange Server | Other
Could not start IIS Admin service. Event 7024
Hi, I am having an issue accessing my exchange admin center (exchange 2016) via web browser, HTTP 500 internal error. upon checking the services, I found that IIS Admin was unable to start and was showing this error message By checking event…
Exchange | Exchange Server | Other
Windows development | Internet Information Services
When will Microsoft clarify Exchange Server SE "Qualifying Cloud Subscriptions"
This is getting very annoying, and the question keeps being avoided by Microsoft anyone would think this is deliberate, sureley now Exchange Server SE has been released this information should be available? Other cloud subscription licenses besides…
Exchange | Exchange Server | Other
Exchange server domian across migration with certificater
"I have an existing Exchange Server 2016 with the MRS (Mailbox Replication Service) enabled. On IIS, both the Frontend and Backend are bound to a public wildcard certificate (*). Now, I'm performing a cross-forest migration. All other configurations…
Exchange | Exchange Server | Other
Exchange-SMTP app connect failed some times
"I have an application that tries to connect to the SMTP service of Exchange Server 2019 for sending emails. However, it occasionally fails to send messages—but not all jobs fail. I tried using port 587 and 25, and the issue occurs with both. How…
Exchange | Exchange Server | Other
Shared calendars do not display in Outlook mobile app
User has an iphone with the outlook app. Go to add a shared calendar in outlook mobile, and it is checked that she already has it, but nothing displays. Uninstalled and reinstalled outlook, removed and added account, deleted shared calendar on desktop…
Exchange | Exchange Server | Other
Outlook | Windows | Classic Outlook for Windows | For business
A problem with MS Exchange or why outlook does not want to synchronize? 0X80040115 error
Hi everyone, today 2. april 2024 around lunchtime, we had a problem with two users connecting their outlook to the exchange server. In the event logo of Windows there is a recurring message about the loss and restoration of the connection with the MS…
Exchange | Exchange Server | Other
Outlook | Windows | Classic Outlook for Windows | For business
Admin accounts cannot access ECP, Exchange 2019 CU12
We migrated from Exchange 2010 to Exchange 2019 CU12. But none of original Org Management access accounts get access the ECP. We all get an http 500 error. I created a brand-new account and that works fine. The new account has a mailbox On Prem, but all…
Exchange | Exchange Server | Other
Exchange | Exchange Server | Management
Exchange | Hybrid management

What are the symptoms of an expired "Microsoft Exchange Server Auth Certificate"?
So I recently inherited an older Exchange 2013 Standard server (fully patched) I noticed that the Microsoft Exchange Server Auth Certificate has been expired for a long time. There are no complaints or any issues reported by the users but I have noticed…
Exchange | Exchange Server | Other
Exchange | Exchange Server | Management
Exchange | Other
Public Folder Migration - Exchange 2013 > Office 365 - Stuck at 95% - MailEnabling Public Error
Hello I am trying to migrate our public folder to Office365 following this guide: [https://learn.microsoft.com/en-us/exchange/collaboration/public-folders/migrate-to-exchange-online?view=exchserver-2019 Everything runs through fine, there are no errors…
Exchange Online
Exchange | Exchange Server | Other
Exchange | Exchange Server | Management
Exchange | Hybrid management
EasSendFailedPermanentException: An EAS Send command failed: Unable to send the message: either the send quota has been exceeded; or the message was too large; or the mailbox is over-quota. Exchange ActiveSync error details: SendQuotaExceeded, Code ='115'
At the start it was when i was sending attachments, now it is sometimes without, emails are bouncing straight back. We have had on out online webmail, and the problem does not happen it is only when using Outlook Exchange.…
Exchange | Exchange Server | Other
Exchange | Other

We want to go cloud only with Exchange online, but documentation suggests that we must have an Exchange server on-premises since we have EntraID connect for directory synchronization. Is this true?
We have Microsoft Exchange online in a hybrid configuration with one single Exchange 2016 server. I noticed that Exchange 2016 and 2019 are EOL in October 14 of this year, which means that we may need to migrate to Exchange Server SE on premises to keep…
Exchange Online
Exchange | Exchange Server | Other
Exchange | Hybrid management
Microsoft Security | Microsoft Entra | Microsoft Entra ID
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…
Exchange | Exchange Server | Other
Windows for business | Windows 365 Business
Outlook | Windows | Classic Outlook for Windows | For business
Microsoft 365 and Office | Install, redeem, activate | For business | Windows
Exchange | Hybrid management
One user is not receiving incoming emails from a specific domain, while other users can.
Subject: Email Issue for a Specific User Hello, We have a user in our tenant who is not receiving emails from a specific company with whom we do business. While this user can send emails to their contact at that company's domain, our user does not…
Exchange Online
Exchange | Exchange Server | Other
Exchange | Exchange Server | Management
Outlook data files must be open from within Outlook
Hello Please i need your help on this issue. We having a problem opening this document on outlook. The document was archive from outlook but when we tried to open it saying "Outlook data files must be open from within Outlook" Here is the…