Lightnews — Scholar-powered news

LightNews

Michel de Rooij

@eightwone.com

370 followers 74 following 270 posts

Microsoft MVP | Author | Speaker #MSExchange #EntraID #PowerShell #MSGraph

Posts Media Videos Starter Packs

Michel de Rooij @eightwone.com · 19m

PSA: Today, Exchange Online will start throttling MOERA domains https://bit.ly/MoeraThrottling

Michel de Rooij @eightwone.com · 19m

PSA: Today, AzureAD & AzureAD Preview modules retire https://bit.ly/AADModuleRetire

Michel de Rooij @eightwone.com · 1d

PSA: Tomorrow, Exchange Online will start throttling MOERA domains https://bit.ly/MoeraThrottling

Michel de Rooij @eightwone.com · 1d

PSA: Tomorrow, AzureAD & AzureAD Preview modules retire https://bit.ly/AADModuleRetire

Michel de Rooij @eightwone.com · 1d

PSA: Today, Exchange 2019 & 2016 reach End-of-Life https://bit.ly/ETOEx20162019EOL

Michel de Rooij @eightwone.com · 2d

PSA: Tomorrow, Exchange 2019 & 2016 reach End-of-Life https://bit.ly/ETOEx20162019EOL

Michel de Rooij @eightwone.com · 6d

Hybrid Exchange issues with Free/Busy? It's planned nudge day 3 of 3. Test-OAuthConnectivity likely shows 403 error, eg running (mix with) Exchange with pre-April patch levels. Affected? Act soon, permanent after EoM! bit.ly/ETOSecChanges #MSExchange

Michel de Rooij @eightwone.com · 7d

PSA: In 1 week, AzureAD & AzureAD Preview modules retire https://bit.ly/AADModuleRetire

Michel de Rooij @eightwone.com · 7d

PSA: In 1 week, Exchange Online will start throttling MOERA domains https://bit.ly/MoeraThrottling

Michel de Rooij @eightwone.com · 8d

PSA: In 1 week, Exchange 2019 & 2016 reaches End-of-Life https://bit.ly/ETOEx20162019EOL

Michel de Rooij @eightwone.com · 14d

PSA: In 1 year, Exchange Hybrid needs Hybrid app w/GraphAPI perms & EXO retires EWS https://bit.ly/ETOEWSRetireEXO

Michel de Rooij @eightwone.com · 14d

PSA: In 6 months, Exchange Online starts phased rollout of enforcing Mailbox External Recipient Rate Limit https://bit.ly/ETOEXOERR

Michel de Rooij @eightwone.com · 14d

PSA: In 1 year, Exchange Hybrid needs Hybrid app w/GraphAPI perms & EXO retires EWS https://bit.ly/ETOEWSRetireEXO

Michel de Rooij @eightwone.com · 14d

PSA: In 1 month, Exchange Hybrid requires dedicated Hybrid App for cross-prem functionality https://bit.ly/ETOSecChanges

Michel de Rooij @eightwone.com · 14d

PSA: Today, legacy EXO tokens start getting turned off https://aka.ms/NAAFAQ

Michel de Rooij @eightwone.com · 15d

PSA: Tomorrow, legacy EXO tokens start getting turned off https://aka.ms/NAAFAQ

Michel de Rooij @eightwone.com · 21d

PSA: In 1 week, legacy EXO tokens start getting turned off https://aka.ms/NAAFAQ

Michel de Rooij @eightwone.com · Sep 15

PSA: In 1 month, Exchange Online will start throttling MOERA domains https://bit.ly/MoeraThrottling

Michel de Rooij @eightwone.com · Sep 15

PSA: In 1 month, AzureAD & AzureAD Preview modules retire https://bit.ly/AADModuleRetire

Michel de Rooij @eightwone.com · Sep 14

PSA: In 1 month, Exchange 2019 & 2016 reaches End-of-Life https://bit.ly/ETOEx20162019EOL

Michel de Rooij @eightwone.com · Sep 12

⚠️ Running Exchange Hybrid with mailboxes on-prem & EXO, run pre-Apr2025 HU builds and not configure dedicated hybrid app? Scheduled disruptions Sep16 7am-Sep18 7am in GMT. Symptoms: broken F/B, MailTips or profile pic. Info at techcommunity.microsoft.com/blog/exchang... #MSExchange

The first temporary enforcement of dedicated hybrid app use is coming on September 16 | Microsoft Community Hub

A reminder that on September 16 2025, we will enforce the first temporary block of shared security principal use for our hybrid customers.  

techcommunity.microsoft.com

Michel de Rooij @eightwone.com · Sep 8

PSA: Hotfixes arrived for Exchange 2016-SE to fix a cross-prem issue for the Move to Archive retention tag using dedicated Hybrid app eightwone.com/2025/09/08/h... #MSExchange

Hotfix Updates Exchange 2016-SE (Sep2025)

The Exchange product group released the September 2025 Hotfix Updates for Exchange Server SE, Exchange Server 2019, and Exchange Server 2016. Hotfix updates do not contain security fixes, but addre…

Michel de Rooij @eightwone.com · Sep 1

PSA: In 6 months, Exchange Online starts retiring SMTP AUTH https://bit.ly/ETOSMTPAuthRetireEXO

Michel de Rooij @eightwone.com · Sep 1

PSA: Today, Exchange Online deprecates old message trace UI & cmdlets for WW https://bit.ly/EXOMessageTraceV2

Michel de Rooij @eightwone.com · Sep 1

PSA: Today, Exchange Online starts retiring Client Access Rules https://bit.ly/ETOCARDeprecation