
OneDrive handles sync differently depending on the type of file.įor Office 2016 and Office 2019 files, OneDrive collaborates directly with the specific apps to ensure data are transferred correctly. SharePoint in Microsoft 365 uses FedAuth.The authentication protocols depend on which version of SharePoint you are using. Polling can lead to system lag and slowness because it requires a lot of computing power. The previous OneDrive for Business sync app (Groove.exe) used a polling service to check for changes on a predetermined schedule. The changes are processed in the order they are received. Microsoft 365 has metadata pointers directing it through Microsoft Azure. Downloading content also starts a specific session with the client.Any metadata changes happen immediately, like renaming or deleting files.OneDrive adds it to the Internal Server Changes Queue. WNS informs the sync app whenever a change actually happens, eliminating redundant polling and saving on unnecessary computing power. The OneDrive sync app uses Windows Push Notification Services (WNS) to sync files in real time. It helps you understand the logic behind how information flows between applications, how the technologies work together, and how data is secured. This article gives you an overview of how sync works in Microsoft OneDrive.
