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Microsoft Exchange

@MSFTExchange

The official Twitter account for Microsoft Exchange. This is not a support account. For support, contact @MicrosoftHelps or visit https://xitter.twitterapi.xyz/t.co/3bXLSeKar2.

 Redmond, WA
aka.ms/EHLO
Joined September 2009
  • Tweets5.6K
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  • Followers69.7K
2KMedia
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Released: November 2026 Exchange Server Security Updates techcommunity.microsoft.com/…
Released: November 2026 Exchange Server Security Updates | Microsoft Community Hub

Released: November 2026 Exchange Server Security Updates | Microsoft Community Hub

We released November 2026 Security Updates for Exchange Server SE.  

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Now available: OAuth authentication for on-premises Exchange mailbox migrations to Microsoft 365 techcommunity.microsoft.com/…
Now available: OAuth authentication for on-premises Exchange mailbox migrations to Microsoft 365 |...

Now available: OAuth authentication for on-premises Exchange mailbox migrations to Microsoft 365 |...

MRS migrations now support OAuth!  

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Exchange Online EWS application stopped working? Do this. techcommunity.microsoft.com/…
Exchange Online EWS application stopped working? Do this. | Microsoft Community Hub

Exchange Online EWS application stopped working? Do this. | Microsoft Community Hub

This blog post contains exact steps to temporarily unblock your blocked EWS applications (until April 2027).  

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The Change Optics Report is now Generally Available in Exchange Online techcommunity.microsoft.com/…
The Change Optics Report is now Generally Available in Exchange Online | Microsoft Community Hub

The Change Optics Report is now Generally Available in Exchange Online | Microsoft Community Hub

We are announcing General Availability of the Change Optics Report in Exchange Online.

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Exchange servers may become unstable after installation of October 2026 Windows updates techcommunity.microsoft.com/…
Exchange servers may become unstable after installation of October 2026 Windows updates | Microsoft...

Exchange servers may become unstable after installation of October 2026 Windows updates | Microsoft...

More information related to issues that some Exchange servers might experience after installation of October 2026 Windows updates.  

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Released: October 2026 Exchange Server Security Updates techcommunity.microsoft.com/…
Released: October 2026 Exchange Server Security Updates | Microsoft Community Hub

Released: October 2026 Exchange Server Security Updates | Microsoft Community Hub

We have released October 2026 Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only.  

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Sending From Email Aliases – General Availability techcommunity.microsoft.com/…
Sending From Email Aliases – General Availability | Microsoft Community Hub

Sending From Email Aliases – General Availability | Microsoft Community Hub

We are announcing General Availability (GA) of Sending from Email Alias in Exchange Online.  

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Released: September 2026 V2 Exchange Server Security Updates techcommunity.microsoft.com/…
Released: September 2026 V2 Exchange Server Security Updates | Microsoft Community Hub

Released: September 2026 V2 Exchange Server Security Updates | Microsoft Community Hub

We have released a V2 of September 2026 Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only.  

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EWS Deprecation Is Here – What This Means To You techcommunity.microsoft.com/…
EWS Deprecation Is Here – What This Means To You | Microsoft Community Hub

EWS Deprecation Is Here – What This Means To You | Microsoft Community Hub

EWS deprecation in Exchange Online is starting today. Learn the details of what happens next.  

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Action Required: Upgrade ExchangeOnlineManagement PowerShell Module to Version 3.10.1 or Newer techcommunity.microsoft.com/…
Action Required: Upgrade ExchangeOnlineManagement PowerShell Module to Version 3.10.1 or Newer |...

Action Required: Upgrade ExchangeOnlineManagement PowerShell Module to Version 3.10.1 or Newer |...

We wanted to let you know that you should update your Exchange Online PowerShell module over the next several months.  

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Impact of Exchange Online EWS Deprecation on Hybrid Rich Coexistence and Cross-org Sharing | Microsoft Community Hub techcommunity.microsoft.com/…
Impact of Exchange Online EWS Deprecation on Hybrid Rich Coexistence and Cross-org Sharing |...

Impact of Exchange Online EWS Deprecation on Hybrid Rich Coexistence and Cross-org Sharing |...

We wanted to discuss how upcoming Exchange Online EWS retirement impacts our hybrid customers and cross-org sharing scenarios.  

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Released: September 2026 Exchange Server Security Updates techcommunity.microsoft.com/…
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Exchange Server AD FS Modern Authentication: Expanded Outlook client support techcommunity.microsoft.com/…
Exchange Server AD FS Modern Authentication: Expanded Outlook client support | Microsoft Community...

Exchange Server AD FS Modern Authentication: Expanded Outlook client support | Microsoft Community...

Expanded Outlook client support for Exchange Server AD FS Modern Authentication is here!  

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Take control of your EWSAllowedAppIDs list before EWS access changes techcommunity.microsoft.com/…
Take control of your EWSAllowedAppIDs list before EWS access changes | Microsoft Community Hub

Take control of your EWSAllowedAppIDs list before EWS access changes | Microsoft Community Hub

We wanted to provide additional guidance on how admins should use the EWSAllowedAppIDs allow list during EWS deprecation.  

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Exchange 2016/2019: Throttling and Blocking up to the Final Public Update Baseline | Microsoft Community Hub techcommunity.microsoft.com/…
Exchange 2016/2019: Throttling and Blocking up to the Final Public Update Baseline | Microsoft...

Exchange 2016/2019: Throttling and Blocking up to the Final Public Update Baseline | Microsoft...

Customers still using Exchange 2016 or 2019 should read this update about oldest version of Exchange Server allowed to send email to Exchange Online over the...

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Tell us how you use ObjectGuid, SamAccountName, and DistinguishedName in Exchange Online | Microsoft Community Hub techcommunity.microsoft.com/…
Tell us how you use ObjectGuid, SamAccountName, and DistinguishedName in Exchange Online | Micros...

Tell us how you use ObjectGuid, SamAccountName, and DistinguishedName in Exchange Online | Micros...

We wanted to ask how you use Guid, SamAccountName, and DistinguishedName in Exchange Online.  

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Help us shape Exchange Server on-premises to different online org Free/Busy after EWS retirement | Microsoft Community Hub techcommunity.microsoft.com/…
Help us shape Exchange Server on-premises to different online org Free/Busy after EWS retirement |...

Help us shape Exchange Server on-premises to different online org Free/Busy after EWS retirement |...

We wanted feedback about Exchange Server on-premises to different online org Free/Busy sharing, after EWS retirement.  

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Notes from the field: testing EWSAllowedAppIDs safely | Microsoft Community Hub techcommunity.microsoft.com/…
Notes from the field: testing EWSAllowedAppIDs safely | Microsoft Community Hub

Notes from the field: testing EWSAllowedAppIDs safely | Microsoft Community Hub

We wanted to share some tips on how to test EWSAllowedAppIDs (EWS AppID allow list).  

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Understanding the new 100 GB mailbox entitlement for Microsoft 365 Business suites | Microsoft Community Hub techcommunity.microsoft.com/…
Understanding the new 100 GB mailbox entitlement for Microsoft 365 Business suites | Microsoft...

Understanding the new 100 GB mailbox entitlement for Microsoft 365 Business suites | Microsoft...

We wanted to show Administrators how recent mailbox quota changes for Microsoft 365 Business suites will apply to their users.  

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Where is Exchange SE CU1 anyway? | Microsoft Community Hub techcommunity.microsoft.com/…

Where is Exchange SE CU1 anyway? | Microsoft Community Hub

We wanted to discuss why we are somewhat late with releasing Exchange SE CU1.  

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