Michel de Rooij ✅ @eightwone.com · 13hPSA: Tomorrow, Exchange Hybrid requires Hybrid app w/GraphAPI perms xf.ms/HybridAppReq 001
Michel de Rooij ✅ @eightwone.com · 13hPSA: Tomorrow, EWS block enforced for EXO mailboxes with Kiosk/Frontline SKUs (upd) xf.ms/NoEWSEnforced 001
Michel de Rooij ✅ @eightwone.com · 13hPSA: Tomorrow, Exchange Online starts retiring Exchange Web Services (EWS) xf.ms/EXORetireEWS 001
Michel de Rooij ✅ @eightwone.com · 28/09/2026PSA: In 3 months, Exchange Online starts retiring SMTP AUTH w/BasicAuth xf.ms/SmtpAuthRetire 000
Michel de Rooij ✅ @eightwone.com · 27/09/2026PSA: In 3 months, SMTP AUTH w/BasicAuth gets disabled for existing tenants, admin can re-enable xf.ms/SmtpAuthRetire 001
Michel de Rooij ✅ @eightwone.com · 24/09/2026Azure Communications Services (ACS) standalone offerings, including bulk/application email, will be retired on September 30, 2028. If you're using ACS today, or planning to adopt it, review the retirement timelines and sign-up deadlines carefully, as some changes take effect soon xf.ms/ACSRetirementxf.msRetirement and breaking changes guide for Azure Communication ServicesCentral guidance for ACS retirements and breaking changes with timelines, support phases, and migration paths. 102
Michel de Rooij ✅ @eightwone.com · 24/09/2026PSA: In 1 week, EWS block enforced for EXO mailboxes with Kiosk/Frontline SKUs (upd) xf.ms/NoEWSEnforced 000
Michel de Rooij ✅ @eightwone.com · 24/09/2026PSA: In 1 week, Exchange Hybrid requires Hybrid app w/GraphAPI perms xf.ms/HybridAppReq 000
Michel de Rooij ✅ @eightwone.com · 24/09/2026PSA: In 1 week, Exchange Online starts retiring Exchange Web Services (EWS) xf.ms/EXORetireEWS 000
Michel de Rooij ✅ @eightwone.com · 14/09/2026PSA: In 1 month, Period 2 of Extended Security Update (ESU) program for Exchange 2019 & 2016 ends xf.ms/Ex20192016ESU2 000
Michel de Rooij ✅ @eightwone.com · 08/09/2026Happy Patch Tuesday: Exchange Security Updates September 2026 (Exchange SE/2019/2016) arrived eightwone.com/2026/09/08/s... #MSExchangeeightwone.comSecurity Updates Exchange 2016-SE (Sep2026)The Exchange product group released the September 2026 updates for Exchange Server SE, Exchange 2019, and Exchange 2016. The Security Update for Exchange SE is publicly available. Security updates … 011
Michel de Rooij ✅ @eightwone.com · 01/09/2026PSA: In 6 months, New Outlook starts opt-out phase xf.ms/NewOutlookToggle 001
Michel de Rooij ✅ @eightwone.com · 01/09/2026PSA: In 1 month, Exchange Hybrid requires Hybrid app w/GraphAPI perms xf.ms/HybridAppReq 001
Michel de Rooij ✅ @eightwone.com · 01/09/2026PSA: In 1 month, EWS block enforced for EXO mailboxes with Kiosk/Frontline SKUs (upd) xf.ms/NoEWSEnforced 001
Michel de Rooij ✅ @eightwone.com · 01/09/2026PSA: In 1 month, Exchange Online starts retiring Exchange Web Services (EWS) xf.ms/EXORetireEWS 001
Michel de Rooij ✅ @eightwone.com · 25/08/2026Running non-Hybrid Exchange on-premises? MS is considering requiring a tenant for Free/Busy collaboration with peers in Exchange Online, driven by Cross-Tenant Access Policies in the post-EWS era. Product Group is looking for feedback techcommunity.microsoft.com/blog/exchang... #MSExchangetechcommunity.microsoft.comHelp us shape Exchange Server on-premises to different online org Free/Busy after EWS retirement | Microsoft Community HubWe wanted feedback about Exchange Server on-premises to different online org Free/Busy sharing, after EWS retirement. 012
Reposted by Michel de Rooij ✅Tony Redmond @office365itpros.com · 01/08/2026 The August 2026 update for the #Microsoft365 for IT Pros eBook (well, 4 eBooks in one package) is available for subscribers to download. See office365itpros.com/2026/08/01/m... for more information.office365itpros.comMicrosoft 365 for IT Pros August 2026 UpdateThe August 2026 monthly update for the Microsoft 365 for IT Pros eBook is now available for subscribers to download. All four books are updated. 012
Michel de Rooij ✅ @eightwone.com · 03/08/2026blog: MVPs around the World (2026). Have a look at which categories have grown, which countries lost ground a.o. eightwone.com/2026/08/03/m... #MVPBuzzeightwone.comMVPs around the World (2026)Another year, another Microsoft MVP award cycle. And a new program logo, as you might have spotted. This year, this post took a while longer to get published. This is due to the date the renewals w… 010
Michel de Rooij ✅ @eightwone.com · 14/07/2026PSA: In 3 months, Period 2 of Extended Security Update (ESU) program for Exchange 2019 & 2016 ends xf.ms/Ex20192016ESU2 000
Michel de Rooij ✅ @eightwone.com · 01/07/2026Announcing Microsoft 365 for IT Pros (2027 Edition) office365itpros.com/2026/07/01/microsoft-365-for-it-pros/ #Microsoft365 #MSExchange #Copilot #MSTeams #SharePoint #OneDrive #PowerPlatform #PowerApps #PowerAutomate #AI #Agents #MVPBuzzoffice365itpros.comAnnouncing Microsoft 365 for IT Pros (2027 Edition)We're happy to announce the publication of Microsoft 365 for IT Pros (2027 edition) eBook, the most comprehensive and up-to-date book covering tenant management 020
Michel de Rooij ✅ @eightwone.com · 01/07/2026PSA: In 3 months, Exchange Hybrid requires Hybrid app w/GraphAPI perms xf.ms/HybridAppReq 011
Michel de Rooij ✅ @eightwone.com · 01/07/2026PSA: In 3 months, EWS block enforced for EXO mailboxes with Kiosk/Frontline SKUs (upd) xf.ms/NoEWSEnforced 010
Michel de Rooij ✅ @eightwone.com · 01/07/2026PSA: In 3 months, Exchange Online starts retiring Exchange Web Services (EWS) xf.ms/EXORetireEWS 010
Michel de Rooij ✅ @eightwone.com · 28/06/2026PSA: In 6 months, Exchange Online starts retiring SMTP AUTH w/BasicAuth xf.ms/SmtpAuthRetire 100
Michel de Rooij ✅ @eightwone.com · 09/06/2026Happy Patch Tuesday: Exchange Security Updates June 2026 (Exchange SE/2019/2016) techcommunity.microsoft.com/blog/exchang... #MSExchangetechcommunity.microsoft.comReleased: June 2026 Exchange Server Security Updates | Microsoft Community HubWe have released Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only. 023
Michel de Rooij ✅ @eightwone.com · 03/06/2026Want to watch Build 2026 sessions offline? I have updated the Get-EventSession script to add Build support, among some other changes. Check it out at github.com/michelderooi... #MSBuild #Build2026github.comGitHub - michelderooij/Get-EventSession: Script to assist in downloading Microsoft event contents or return session information.Script to assist in downloading Microsoft event contents or return session information. - michelderooij/Get-EventSession 010
Reposted by Michel de Rooij ✅Tony Redmond @office365itpros.com · 01/06/2026The June update (#132) for the #Office365 for IT Pros eBook is available for subscribers to download. This is the last update for the 2026 edition. We will publish the 2027 edition next month with some major changes to our content. Read more at office365itpros.com/2026/06/01/o... #Microsoft365office365itpros.comOffice 365 for IT Pros June 2026 UpdateThe 132nd monthly update for the Office 365 for IT Pros eBook is now available for subscribers to download. 002
Michel de Rooij ✅ @eightwone.com · 01/06/2026PSA: In 1 month, EWS block enforced for EXO mailboxes with Kiosk/Frontline SKUs xf.ms/NoEWSEnforced 013
Michel de Rooij ✅ @eightwone.com · 28/05/2026For those working with Firefox & using PIM in Entra - just updated the PIMfox, the PIM role activation plug-in to 1.3.0 addons.mozilla.org/en-US/firefo... #Entra #MSEntra 000
Michel de Rooij ✅ @eightwone.com · 11/05/2026Finally converted Connect-Office365Services to a PowerShell module github.com/michelderooi... - Also available from PSGallery #Microsoft365 031
Michel de Rooij ✅ @eightwone.com · 09/05/2026blog: Hotfix Update Exchange SE (May2026) & (re)run ConfigureExchangeHybridApplication to enable Graph-based rich coexistence workflows eightwone.com/2026/05/09/h... #MSExchangeeightwone.comHotfix Update Exchange SE (May2026)The Exchange product group released the May 2026 Hotfix update for Exchange Server SE. Hotfix updates do not contain security fixes, but address issues. They also might introduce or add support for… 010
Michel de Rooij ✅ @eightwone.com · 06/05/2026The Exchange Deployment and Compliance Tool has been updated to 1.0.0.0; consult the Changelog for changes github.com/michelderooi... For example, EDCA is now available from the PowerShell Gallery www.powershellgallery.com/packages/EDCA #MSExchange #Security #NIS2 #CIS #ANSSI #BSI #CISA #ISM #DISAgithub.comGitHub - michelderooij/EDCA: Exchange Deployment & Compliance AssessmentExchange Deployment & Compliance Assessment. Contribute to michelderooij/EDCA development by creating an account on GitHub. 020
Michel de Rooij ✅ @eightwone.com · 23/04/2026So, I vibe-coded a thing: EDCA, your Exchange Deployment & Compliance Assessment tool. Read the blog for more info - preview , feedback much welcomed eightwone.com/2026/04/23/e... #MSExchange #Securityeightwone.comExchange Deployment & Compliance AssessmentExchange on‑premises environments remain a critical part of many organizations’ messaging infrastructure. That also makes them frequent audit targets and attractive attack surfaces. Over time, conf… 010
Michel de Rooij ✅ @eightwone.com · 15/04/2026Microsoft announced Period 2 of the Exchange Server 2016/2019 Extended Security Update (ESU) program, which provides continued access to any security updates for legacy on‑premises Exchange environments. While ESUs extend time, orgs cannot avoid the inevitable xf.ms/Ex20192016ESU2 #MSExchangexf.msAnnouncing Period 2 Exchange 2016/2019 Extended Security Update (ESU) program | Microsoft Community HubWe created a Period 2 ESU for Exchange customers who need extra time to migrate to Exchange SE. 000
Michel de Rooij ✅ @eightwone.com · 14/04/2026PSA: Today, Extended Security Update (ESU) period Exchange 2019 & 2016 ends xf.ms/Exchange20192016ESU 000
Michel de Rooij ✅ @eightwone.com · 13/04/2026PSA: Tomorrow, Extended Security Update (ESU) period Exchange 2019 & 2016 ends xf.ms/Exchange20192016ESU 001
Reposted by Michel de Rooij ✅Tony Redmond @office365itpros.com · 01/04/2026We've released the April 2026 update (monthly update #130) for the Office 365 for IT Pros eBook. The Automating #Microsoft365 with #PowerShell eBook (included in the bundle) is also updated. Subscribers, please download! office365itpros.com/2026/04/01/o...office365itpros.comOffice 365 for IT Pros April 2026 Update (#130)Fresh from celebrating the 30th anniversary of Exchange Server, the Office 365 for IT Pros team is happy to release the 130th monthly update for the book. 023
Michel de Rooij ✅ @eightwone.com · 01/04/2026PSA: In 6 months, Exchange Online starts retiring Exchange Web Services (EWS) xf.ms/EXORetireEWS 000
Michel de Rooij ✅ @eightwone.com · 01/04/2026PSA: In 1 month, Extended Security Update (ESU) period Exchange 2019 & 2016 ends xf.ms/Exchange20192016ESU 000
Michel de Rooij ✅ @eightwone.com · 01/04/2026PSA: In 6 months, Exchange Hybrid requires Hybrid app w/GraphAPI perms xf.ms/HybridAppReq 000
Michel de Rooij ✅ @eightwone.com · 31/03/2026Achievement Unlocked! cc/ @exchangegoddess.bsky.social 010
Michel de Rooij ✅ @eightwone.com · 31/03/2026PSA: In 3 months, EWS block enforced for EXO mailboxes with Kiosk/Frontline SKUs xf.ms/NoEWSEnforced 000
Michel de Rooij ✅ @eightwone.com · 30/03/2026PSA: In 3 months, EWS block enforced for EXO mailboxes with Kiosk/Frontline SKUs xf.ms/NoEWSEnforced 000
Michel de Rooij ✅ @eightwone.com · 24/03/2026Scripters and vendors take note: Starting Dec 31, changing sensitive properties of messages through Graph will require specific permissions, tightening immutability of received messages xf.ms/EXOMsgImmuta...xf.msUpcoming Breaking Changes to Modifying Sensitive Email Properties via Graph API | Microsoft Community HubWe are announcing upcoming changes to what message properties can be changed using Graph API. 012
Michel de Rooij ✅ @eightwone.com · 15/03/2026PSA: Today, Exchange Online requires trusting DigiCert Root G2 CA chain to avoid disruption xf.ms/DigiCertRootG2 001
Michel de Rooij ✅ @eightwone.com · 14/03/2026PSA: Tomorrow, Exchange Online requires trusting DigiCert Root G2 CA chain to avoid disruption xf.ms/DigiCertRootG2 032
Michel de Rooij ✅ @eightwone.com · 08/03/2026PSA: In 1 week, Exchange Online requires trusting DigiCert Root G2 CA chain to avoid disruption xf.ms/DigiCertRootG2 000
Michel de Rooij ✅ @eightwone.com · 01/03/2026PSA: Today, EXO will block native email apps using EAS<16.1 xf.ms/PreEAS61Block 000
Michel de Rooij ✅ @eightwone.com · 28/02/2026PSA: Tomorrow, EXO will block native email apps using EAS<16.1 xf.ms/PreEAS61Block 000
Michel de Rooij ✅ @eightwone.com · 22/02/2026PSA: In 1 week, EXO will block native email apps using EAS<16.1 xf.ms/PreEAS61Block 000
