powershell ewsallowedappids

The powershell ewsallowedappids tag covers Microsoft’s EWSAllowedAppIDs feature for Exchange Online. Its content explains how tenant administrators can restrict remaining Exchange Web Services access to approved application IDs before Microsoft begins phased EWS disablement in October 2026 and completes the planned retirement in April 2027. The discussion focuses on the shift from broad compatibility toward explicit application exceptions, including the need for organizations to identify which applications still depend on EWS and justify continued access. This archive is relevant to administrators planning Exchange Online migrations, reviewing legacy integrations, and preparing for Microsoft’s evolving access-control requirements.