Microsoft Entra Connect Sync version v2.6.3.0 addresses an issue where auto-upgrade would halt synchronization. What's Fixed Microsoft addressed a known issue in Entra Connect Sync v2.5.190.0 and v2.6.1.0, where the Automatic Upgrades feature could stop Entra Connect Sync from synchronizing unexpectedly with the following error: System.IO.FileLoadException: Could not load file or assembly 'System.Diagnostics.DiagnosticSource, Version=6.0.0.1' … Continue reading "Entra Connect Sync 2.6.3.0 addresses an issue where auto-upgrade would halt synchronization"