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https://veenstra.me.uk/2015/02/26/sharepoint-2013-user-profile-service-partitionpropertiescache-refreshpartitionproperties-encountered-error-system-invalidoperationexception-operation-is-not-valid-due-to-the-current-state-of-th/
SharePoint 2013 - User Profile Service - PartitionPropertiesCache.RefreshPartitionProperties: Encountered error: System.InvalidOperationException: Operation is not valid due to the current state of the object