Notes From the Field: Finding and Remediating EWS App Usage Before Retirement
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#MSExchange #EWS #AppUsage
Notes From the Field: Finding and Remediating EWS App Usage Before Retirement
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#MSExchange #EWS #AppUsage
Do you use Multi-Geo Capabilities in Microsoft 365? In-Region Routing reached GA in December 2025. You can now control the geographic location where inbound email enters Exchange Online for anonymous inbound mail and hybrid inbound mail from on-premises.
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Support for the -Credential parameter will be removed from new Exchange Online PowerShell versions released after June 2026.
#MSExchange #ExchangeOnline #Security
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Released: February 2026 Exchange Server Security Updates
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#MSExchange #Security
Exchange Web Services (EWS) is approaching end of service in Exchange Online and will be disabled starting in October 2026, with a complete shutdown in mid-2027. This is Exchange Online only--no changes to EWS in Exchange Server.
#EWS #ExchangeOnline
techcommunity.microsoft.com/blog/exchang...
The Public Preview of the User Configuration API in the Graph beta endpoint is now available. The User Configuration API is a new set of endpoints you can use to create, read, update, and delete user configuration objects in Exchange Online mail folders.
devblogs.microsoft.com/microsoft365...
PSA: To avoid mail flow disruption between your organization and Exchange Online, organizations must ensure that their servers and clients trust the DigiCert Global Root G2 Certificate Authority and its subordinate CAs before April 30, 2026.
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#MSExchange
Control whether your Windows BitLocker recovery key is saved online - linkedin.com/pulse/contro...
#BitLocker #Microsoft #privacy
Great information about Public Folder data and retention in Exchange Online.
#MSExchange #ExchangeOnline #PublicFolders #Retention
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Message Trace support using Graph API is now in Public Preview and GA will begin rolling out soon. If you currently use Message Trace using the Reporting Webservice, migrate to the Graph API before April 6, 2026.
techcommunity.microsoft.com/blog/exchang...
#MSExchange #MessageTrace #GraphAPI
Deep dive into Exchange Online Mailbox Quotas
#ExchangeOnline #Quotas
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FYI, no SUs or other security releases for Exchange Server SE (or 2016/2019 customers in the ESU program) this month.
#MSExchange #Security
techcommunity.microsoft.com/blog/Exchang...
PSA: Microsoft does not support local move requests in Exchange Online. This article explains why that is.
#MSExchange #MailboxMoves
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FYI, Microsoft is indefinitely cancelling the Exchange Online Mailbox External Recipient Rate Limit - techcommunity.microsoft.com/blog/exchang...
#MSExchange #ERR #Announcement
Busting the Top 3 Myths about Exchange Server Subscription Edition www.linkedin.com/pulse/top-3-...
#MSExchange #ExchangeSE #Myths
You can raise a support case with Azure and request an unblock of port 25. Whether they will grant it depends on your subscription age and trust level. In lieu of that, you could also use Azure Communication Services and/or High Volume Email in Exchange Online.
15.12.2025 22:57 — 👍 0 🔁 0 💬 0 📌 0
Since posting my previous article about licensing and product keys in Exchange Server SE, I’ve received a ton of follow-up questions. So, here's Part II.
www.linkedin.com/pulse/exchan...
#MSExchange #Licensing
Starting March 1, 2026, devices running ActiveSync versions lower than 16.1 will no longer be able to connect to Microsoft services. This applies only to Exchange Online and only to mobile devices using native email apps.
#MSExchange #EAS #ActiveSync
techcommunity.microsoft.com/blog/exchang...
Learn how to use ExcludeFromAllHolds in Exchange Online to remove holds and allow for permanent deletion while maintaining compliance requirements.
techcommunity.microsoft.com/blog/exchang...
#ExchangeOnline #Hold #Compliance
FYI, security updates were also released for Office Online Server yesterday. See support.microsoft.com/en-us/topic/... for details and download link.
#OfficeOnlineServer #WAC #Security
The December 2025 SU is now available for Exchange Server SE. This SU is also available for Exchange Server 2019 and Exchange Server 2016 customers in the Exchange Server ESU program.
techcommunity.microsoft.com/blog/Exchang...
#MSExchange #Security
Confused about licensing and product keys in Exchange Server SE? This may help.
lnkd.in/gMDBNEdV
#MSExchange #Licensing #ProductKeys #SubscriptionEdition
Starting March 1, 2026, Microsoft will block EWS access for Exchange Online mailboxes that don't have license rights to EWS, namely, Exchange Online Kiosk, Microsoft 365/Office 365 F1, and Microsoft 365/Office 365 F3.
techcommunity.microsoft.com/blog/exchang...
#MSExchange #EWS #Licensing
M365 Local adds complexity without value. There's no benefit to running it for Exchange mailbox servers when a DAG deployed on physical hardware is cheaper and provides greater availability. Also, deployment must be performed by a solution partner certified by Microsoft, which increases costs.
29.11.2025 18:36 — 👍 2 🔁 0 💬 0 📌 0
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.
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
11.11.2025 15:53 — 👍 44 🔁 12 💬 2 📌 1
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.
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#MSExchange #Security
Retirement Date for Office Online Server (OOS) has been Announced | Microsoft Community Hub! 🦋
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Office Online Server Retirement Announced - December 31, 2026
techcommunity.microsoft.com/blog/officee...
#OOS #WAC #OfficeOnlineServer #OnPremises #OfficeServers