Scott Schnoll

Announcing Public Preview: Exchange Online Admin API | Microsoft Community Hub We are announcing the Public Preview of the Exchange Online Admin API.  

Exchange Online Admin API (replacement for EWS) is now available in public preview.

techcommunity.microsoft.com/blog/exchang...

#MSExchange #EWSDeprecation #AdminAPI

PSA: Microsoft has resolved the issue of duplicate schema entries when Windows Server 2025 is used as a Schema Master FSMO role holder. See support.microsoft.com/en-us/topic/....

This prevents the issue from happening but if you are experiencing the issue, contact the Windows AD support team.

.NET Conf 2025 Join the .NET Conf 2025 free virtual event November 11-13 2025 to learn about the newest developments across the .NET platform, open source, and dev tools. Mark your calendar!

Join us LIVE at #dotNetConf as we launch .NET 10 and VS2026! We are live with demos and details for the next three days! www.dotnetconf.net

No Exchange Server Security Updates for November 2025 | Microsoft Community Hub We are not releasing any Exchange Server Security Updates for November 2025  

PSA: No Exchange Server SUs are being released this month, and between now and April 2026, the Exchange Team will explicitly announce when SUs are NOT released.

techcommunity.microsoft.com/blog/exchang...

#MSExchange #Security

Retirement Date for Office Online Server (OOS) has been Announced | Microsoft Community Hub Office Online Server retirement date has been Announced.  

Retirement Date for Office Online Server (OOS) has been Announced | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...

Announcing the retirement for Office Online Server | Microsoft Community Hub What’s changing? Microsoft is announcing the end of support and retirement for Office Online Server effective December 31, 2026. After this date, Office...

Office Online Server Retirement Announced - December 31, 2026
techcommunity.microsoft.com/blog/officee...

#OOS #WAC #OfficeOnlineServer #OnPremises #OfficeServers

Cloud-Managed Remote Mailboxes: Now Generally Available! | Microsoft Community Hub We are happy to announce General Availability of cloud-managed Remote Mailboxes.  

Cloud-Managed Remote Mailboxes: Now Generally Available! | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...

Released: October 2025 Exchange Server Security Updates | Microsoft Community Hub We have released Security Updates for Exchange Server SE, Exchange Server 2019 and Exchange Server 2016.  

Released: October 2025 Exchange Server Security Updates

techcommunity.microsoft.com/blog/exchang...

For Exchange Server SE, Exchange Server 2019, and Exchange Server 2016

#MSExchange #security

It's October 14, 2025. Turn off all your servers running Exchange Server 2016 or Exchange Server 2019 tonight.

Just kidding! Install the October 2025 SU first; then turn off your servers.

Long live Exchange Server SE!

#MSExchange #EndofSupport #ThereCanBeOnlyOne

Active Directory schema extension issue if you use a Windows Server 2025 schema master role | Microsoft Community Hub We wanted to let you know of an Active Directory replication issue you might run into if you use Windows Server 2025 schema master role.  

PSA: Do NOT use Windows Server 2025 as the schema master before installing Exchange Server SE RTM. The Windows Server team is working on a permanent fix for this issue (to be released in the following months).

#WindowsServer2025 #MSExchangeSE #ADSchema

techcommunity.microsoft.com/blog/exchang...

The Admin's Guide to Microsoft Exchange Server Subscription Edition The Admin's Guide to Microsoft Exchange Server Subscription Edition - Kindle edition by Schnoll, Scott. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading The Admin's Guide to Microsoft Exchange Server Subscription Edition.

Are you responsible for managing Exchange Server Subscription Edition? If so, I wrote this for you: www.amazon.com/dp/B0FR5GGL75/

Available in Kindle and Paperback.
#MSExchange #admins

Released: September 2025 Exchange Server Hotfix Updates | Microsoft Community Hub We have released Hotfix Updates for Exchange Server Subscription Edition (SE), 2019 and 2016.  

Non-security HU released for Exchange SE RTM, Exchange 2019 CU14/CU15, and Exchange 2016 CU23 that fixes an issue when deploying the dedicated Exchange Hybrid app.

Released: September 2025 Exchange Server Hotfix Updates techcommunity.microsoft.com/blog/exchang...

#MSExchange #Hybrid #HotfixUpdate

Technically that's only two paths, but who's counting? 😉🙂

Limiting Onmicrosoft Domain Usage for Sending Emails | Microsoft Community Hub We are announcing that all Exchange Online customers who send external email should start switching to custom (aka vanity) domain names.

No more MOERA domains for email (which you shouldn't be using the first place 😉)

Limiting Onmicrosoft Domain Usage for Sending Emails

techcommunity.microsoft.com/blog/exchang...

#MExchange #ExchangeOnline #MOERA #Security

Introducing Cloud-Managed Remote Mailboxes: a Step to Last Exchange Server Retirement | Microsoft Community Hub We are excited to announced a feature that enables cloud management of email properties for users with remote mailboxes.  

Introducing Cloud-Managed Remote Mailboxes: a Step to Last Exchange Server Retirement
techcommunity.microsoft.com/blog/exchang...

#MSExchange #Hybrid #LastExchangeServer

Dedicated Hybrid App: temporary enforcements, new HCW and possible hybrid functionality disruptions | Microsoft Community Hub We are announcing enforcements to move customers along to using the dedicated hybrid app.

FYI, temporary pause on the first planned temporary enforcement of the dedicated Hybrid app.

See the banner at techcommunity.microsoft.com/blog/exchang....

#MSExchange #Hybrid #Security

Released: August 2025 Exchange Server Security Updates | Microsoft Community Hub We have released Security Updates for Exchange Server SE, Exchange Server 2019 and Exchange Server 2016.  

The first SU for Exchange Server SE is available.

Released: August 2025 Exchange Server Security Updates - techcommunity.microsoft.com/blog/exchang...

#MSExchange #Securty #Announcement

Exchange Server Subscription Edition (SE) is now available | Microsoft Community Hub We are excited to announce the general availability of Exchange Server Subscription Edition (SE).  

Exchange Server Subscription Edition (SE) is now available | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...

Announcing Exchange 2016 / 2019 Extended Security Update program | Microsoft Community Hub We are announcing an optional 6-month Extended Security Update (ESU) program for Exchange 2016 and 2019.  

Announcing Exchange 2016 / 2019 Extended Security Update program | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...

Use GitHub Copilot to help speed up your transition from EWS | Microsoft Community Hub We wanted to let you know about AI powered tools to help you migrate your EWS apps before Exchange Online EWS deprecation.

Use GitHub Copilot to help speed up your transition from EWS | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...

What is Direct Send and how to secure it | Microsoft Community Hub If you wanted to learn more about the Direct Send feature, this is the post for you!

What is Direct Send and how to secure it | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...

Dedicated Hybrid App: temporary enforcements, new HCW and possible hybrid functionality disruptions | Microsoft Community Hub We are announcing enforcements to move customers along to using the dedicated hybrid app.

Dedicated Hybrid App: temporary enforcements, new HCW and possible hybrid functionality disruptions | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...

Direct Send vs sending directly to an Exchange Online tenant | Microsoft Community Hub This post discusses what Direct Send is, is not, and how to help control email sent directly to your tenant.

Direct Send vs sending directly to an Exchange Online tenant | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...

Microsoft customer guidance for SharePoint Server vulnerability CVE-2025-53770 - msrc.microsoft.com/blog/2025/07...

This does not affect SharePoint Online.

#SharePointServer #security #zerodaythreat

Nice article. FYI, it was always part of the plan. 😉

Announcing Exchange 2016 / 2019 Extended Security Update program | Microsoft Community Hub We are announcing an optional 6-month Extended Security Update (ESU) program for Exchange 2016 and 2019.  

Breaking News! Announcing Exchange 2016 / 2019 Extended Security Update (ESU) program!

Note this is not extended support; it's extended security updates for 6 months.

techcommunity.microsoft.com/blog/exchang...

#MSExchange #ESU #Announcement

Exchange Server Subscription Edition (SE) is now available | Microsoft Community Hub We are excited to announce the general availability of Exchange Server Subscription Edition (SE).  

Today's the day! Exchange Server SE and Skype for Business Server SE have both been released!

Blog post announcements:

techcommunity.microsoft.com/blog/exchang...

techcommunity.microsoft.com/blog/skype_f...

#MSExchange #Skype4BusinessServer #RTM #Announcement

New and Free Active Directory Domain Services Applied Skill Credential | Microsoft Community Hub Learn about the new Active Directory Applied Skills Credential from Microsoft.  

PLEASE RP: New and Free Active Directory Domain Services Applied Skill Credential
techcommunity.microsoft.com/t5/itops-tal...

Released: May 2025 Exchange Server Hotfix Updates | Microsoft Community Hub We have released Hotfix Updates for Exchange Server 2016 and Exchange Server 2019.  

May 2025 HUs for Exchange 2016 and Exchange 2019 have some important (non-security) fixes that will be incorporated into future releases, including Exchange Server SE RTM.

techcommunity.microsoft.com/blog/exchang...

#MSExchange #HotfixUpdate

Get the status of legacy Exchange Online tokens and add-ins that use them | Microsoft Community Hub! 🦋
techcommunity.microsoft.com/blog/exchang...