1,456 questions with Exchange | Exchange Server | Other tags

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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
asked 2024-11-13T12:48:22.8933333+00:00
Yousuf Aziz 0 Reputation points
edited a comment 2025-07-10T16:18:59.7066667+00:00
Ahmad Abd ElHakim 0 Reputation points
0 answers

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
asked 2025-07-10T13:06:35.9+00:00
Dennis Hickie 0 Reputation points
edited the question 2025-07-10T14:04:25.89+00:00
Duane Hookom 80 Reputation points Volunteer Moderator
0 answers

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
asked 2025-07-10T13:45:44.8766667+00:00
Stanley1957-4670 0 Reputation points
1 answer

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
asked 2025-07-10T09:37:59.8+00:00
echo cai 5 Reputation points
edited the question 2025-07-10T09:58:18.97+00:00
Kudos-Ng 640 Reputation points Microsoft External Staff Moderator
1 answer

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
asked 2025-07-03T14:52:23.6633333+00:00
Marie 0 Reputation points
commented 2025-07-10T07:14:33.33+00:00
Marie Langlade 0 Reputation points
1 answer

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
asked 2025-07-09T17:02:01.5133333+00:00
Brad Hunt 0 Reputation points
edited an answer 2025-07-10T04:53:18.27+00:00
Jade-T 1,900 Reputation points Microsoft External Staff Moderator
2 answers

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
asked 2024-12-15T02:11:57.2766667+00:00
Joel Rodriguez 0 Reputation points
commented 2025-07-07T02:38:27.2533333+00:00
Tom Tran (WICLOUD CORPORATION) 10 Reputation points Microsoft External Staff
1 answer

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
asked 2025-07-02T08:32:45.78+00:00
Roach555 0 Reputation points
commented 2025-07-04T13:55:41.9166667+00:00
Jade-T 1,900 Reputation points Microsoft External Staff Moderator
1 answer

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
asked 2025-07-01T01:24:56.95+00:00
姚黎忠 100 Reputation points
commented 2025-07-03T11:50:32.4933333+00:00
Jayden-P 3,805 Reputation points Microsoft External Staff Moderator
0 answers

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
asked 2025-07-03T03:35:58.46+00:00
姚黎忠 100 Reputation points
commented 2025-07-03T03:37:25.0666667+00:00
姚黎忠 100 Reputation points
1 answer One of the answers was accepted by the question author.

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
asked 2023-11-04T02:52:15.6133333+00:00
Ryan Wilderman 156 Reputation points
commented 2025-06-04T16:08:03.61+00:00
Carly Saletnik 0 Reputation points
1 answer

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
asked 2024-04-02T13:04:34.77+00:00
Tomáš Rovňák 0 Reputation points
commented 2025-06-04T10:18:29.5+00:00
Bachoo 35 0 Reputation points
2 answers One of the answers was accepted by the question author.

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
asked 2023-02-20T12:20:27.59+00:00
SAT 26 Reputation points
commented 2025-06-03T17:38:30.3866667+00:00
Gustavo Garrido Sánchez 0 Reputation points
3 answers

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
asked 2023-01-17T13:01:51.8633333+00:00
Caspar - ABO 276 Reputation points
answered 2025-05-19T07:54:51.7133333+00:00
Caspar - ABO 276 Reputation points
1 answer

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 Online
A Microsoft email and calendaring hosted service.
6,190 questions
Exchange | Exchange Server | Other
Exchange | Exchange Server | Management
Exchange | Hybrid management
asked 2023-01-13T14:54:10.6233333+00:00
AM_ADM 21 Reputation points
commented 2025-04-30T09:40:17.49+00:00
Ricardo Costa da Silva 0 Reputation points
2 answers

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
asked 2024-08-13T13:02:33.83+00:00
sonnie ridgley 5 Reputation points
commented 2025-04-30T05:10:58.4233333+00:00
kamal uddin 0 Reputation points
2 answers One of the answers was accepted by the question author.

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 Online
A Microsoft email and calendaring hosted service.
6,190 questions
Exchange | Exchange Server | Other
Exchange | Hybrid management
Microsoft Security | Microsoft Entra | Microsoft Entra ID
asked 2025-01-17T18:53:47.8733333+00:00
Jamie McFarling 51 Reputation points
commented 2025-04-11T20:19:13.18+00:00
Jesse Tedoff 0 Reputation points Microsoft Employee
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…

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
asked 2025-02-12T15:47:26.2766667+00:00
Benjamin GENETELLI 5 Reputation points
commented 2025-03-31T13:40:57.41+00:00
Camille BARBIER 20 Reputation points
1 answer

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 Online
A Microsoft email and calendaring hosted service.
6,190 questions
Exchange | Exchange Server | Other
Exchange | Exchange Server | Management
asked 2024-10-23T14:23:09.9033333+00:00
LM-5132 250 Reputation points
edited a comment 2025-03-28T11:06:58.94+00:00
1 answer One of the answers was accepted by the question author.

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 | Exchange Server | Other
Outlook | Windows | Classic Outlook for Windows | For business
asked 2023-05-23T08:59:57.1733333+00:00
Iniobong Nkanga 2,061 Reputation points
commented 2025-03-28T10:15:58.4266667+00:00
Yung May Liaw 0 Reputation points