Most RecentNewest TopicsMost LikesMost ViewedReleased: October 2026 Exchange Server Security Updates We have released October 2026 Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only. EWS Deprecation Is Here – What This Means To You EWS deprecation in Exchange Online is starting today. Learn the details of what happens next. Introducing more control over Direct Send in Exchange Online Read about a new feature that gives you more control over Direct Send in Exchange Online. Notes from the field: testing EWSAllowedAppIDs safely We wanted to share some tips on how to test EWSAllowedAppIDs (EWS AppID allow list). Announcing Period 2 Exchange 2016/2019 Extended Security Update (ESU) program We created a Period 2 ESU for Exchange customers who need extra time to migrate to Exchange SE. Released: September 2026 V2 Exchange Server Security Updates We have released a V2 of September 2026 Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only. Released: September 2026 Exchange Server Security Updates We have released Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only. Cross-tenant Free/Busy, MailTips, and Calendar Sharing are moving to Cross-Tenant Access Policy We wanted to provide information related to migration of existing Exchange Online Organization Relationships to the new sharing model. Exchange Online EWS, Your Time is Almost Up We wanted to provide an update on Exchange Online EWS deprecation. Take control of your EWSAllowedAppIDs list before EWS access changes We wanted to provide additional guidance on how admins should use the EWSAllowedAppIDs allow list during EWS deprecation.
