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 Server
Outlook
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 Server
Outlook
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 Server
Exchange Server Management
Microsoft 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 Server
Exchange Server Management
Microsoft Exchange
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…
Microsoft Exchange Online
Exchange Server
Microsoft Exchange Online Management
Exchange Server Management
Microsoft 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 Server
Microsoft Exchange

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…
Microsoft Exchange Online
Exchange Server
Microsoft Exchange Hybrid Management
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…
Microsoft 365
Exchange Server
Outlook
Windows 365 Business
Microsoft 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…
Microsoft Exchange Online
Exchange Server
Microsoft Exchange Online Management
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…
Exchange Server
Outlook
Outlook Management
Hybrid agent setup failing on "Validating Hybrid Agent for Exchange usage
Hi, I am setting up a Hybrid Wizard config mail migration from on-prem to exchange online. I am using the Modern Hybrid Topology. I get a Validating Hybrid Agent for Exchange usage error: 20240312_070138.log I have also added the log file for further…
Exchange Server
Exchange Server Management
Microsoft Exchange Hybrid Management

Autodiscover for Outlook is not functioning properly on macOS
I am experiencing an issue with Outlook on MacBook. We are using Exchange On-Premises 2019, and our customers encounter problems when configuring Outlook on their MacBooks. The issue manifests as Outlook frequently showing a "Disconnected"…
Exchange Server
on-prem users are not able to view the free/busy of cloud users in hybrid setup
We are setting up a hybrid Exchange setup from Exchange 2029. We are trying to test the free/busy of migrated users mailbox after mailbox is migrated to Exchange online. We have issue seeing free/busy status of Exchange online users from on-premises (on…
Microsoft Exchange Online
Exchange Server
Unable to Uninstall Exchange server 2016 in a Windows server 2025
We have recently performed an in-place upgrade to the Exchange server (Which was running Windows server 2016) to the Windows server 2025. The upgrade went smoothly. We then tried uninstalling the Exchange server role, considering we are entirely into the…
Exchange Server
POP3 Service not starting on Ms Exchange Server2019 with error"The Microsoft Exchange POP3 service on local computer started and then stopped..."
Hello there, I'm having trouble starting POP3 Service on Ms Exchange Server2019 with error"The Microsoft Exchange POP3 service on local computer started and then stopped. Some services stop automatically if they are not in use by other services or…
Exchange Server
Outlook Sort by Delete Date
Hello, How we can sort deleted email by deleted date in new outlook?
Exchange Server
Outlook

Exchange Server 2019 - How to use new Greenlandic Timezone (UTC-2)
We are running Exchange Server 2019 patched to CU14 Nov24SUv2 on Windows Server 2019. Windows Server has been updated with the patch for the new Greenlandic Timezone UTC-2 …
Exchange Server
Error with saving several docx-files from email attachments
Good day! I encountered a problem with Exchange 2016 with owa. When receiving a letter with several docx files and saving all files at the same time, they are deleted in the archive file with a phrase inside the document “This application has been…
Exchange Server
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 Management
Microsoft Exchange
Microsoft Exchange Hybrid Management
How is the default language/timezone is decided for Shared Mailboxes?
Hello, For User Mailboxes, the use is prompted when they sign in for the first time to OWA to decide their language and time zone. This decides the language they have for their Default folders (Inbox, Spam...) When they use Outlook Desktop, I assume…