Most RecentNewest TopicsMost LikesMost ViewedExchange Online EWS, Your Time is Almost Up We wanted to provide an update on Exchange Online 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. Notes from the field: testing EWSAllowedAppIDs safely We wanted to share some tips on how to test EWSAllowedAppIDs (EWS AppID allow list). Notes From the Field: Finding and Remediating EWS App Usage Before Retirement We wanted to share some tips on how to find out details of EWS usage in your tenant. Introducing EWSAllowedAppIDs: Preparing for the Final Phase of EWS Retirement We wanted to share details about the EWSAllowedAppIDs, to help you manage retirement of EWS applications in Exchange Online. Exchange 2016/2019: Throttling and Blocking up to the Final Public Update Baseline Customers still using Exchange 2016 or 2019 should read this update about oldest version of Exchange Server allowed to send email to Exchange Online over the OnPremises connector. 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 Message Recall in Exchange Online We wanted to announce cross-tenant Message Recall in Exchange Online! Tell us how you use ObjectGuid, SamAccountName, and DistinguishedName in Exchange Online We wanted to ask how you use Guid, SamAccountName, and DistinguishedName in Exchange Online. Understanding the new 100 GB mailbox entitlement for Microsoft 365 Business suites We wanted to show Administrators how recent mailbox quota changes for Microsoft 365 Business suites will apply to their users.