Most RecentNewest TopicsMost LikesMost ViewedExchange Online EWS application stopped working? Do this. This blog post contains exact steps to temporarily unblock your blocked EWS applications (until April 2027). EWS Deprecation Is Here – What This Means To You EWS deprecation in Exchange Online is starting today. Learn the details of what happens next. 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. 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. Writeback for Cloud-Managed Remote Mailboxes: Now Generally Available Writeback for cloud-managed remote mailboxes is now Generally Available! Cross-Tenant Message Recall in Exchange Online We wanted to announce cross-tenant Message Recall in Exchange Online! Upcoming Breaking Changes to Modifying Sensitive Email Properties via Graph API We are announcing upcoming changes to what message properties can be changed using Graph API. Celebrating 30 Years of Microsoft Exchange Exchange Server is 30 years old! AI‑Powered Troubleshooting for Microsoft Purview Data Lifecycle Management now available Just a quick note mentioning a release of AI‑powered troubleshooter for Microsoft Purview Data Lifecycle Management. Announcing Public Preview: Exchange Online Admin API We are announcing the Public Preview of the Exchange Online Admin API.