To discover the sites and organizations a user can access: įile chunks are stored in multiple containers in Azure, each of which is given a unique key. To find new changes and upload information: The OneDrive sync app uses the following to sync files: Other changes are batched together into HTTPS requests to the server. Anything 8 MB or larger is divided into file chunks and sent separately one at a time through a Background Intelligent Transfer Service (BITS) session. If it is not running, OneDrive will.įor other types of files and folders, items smaller than 8 MB are sent inline in a single HTTPS request. If the Office desktop app is running, it will handle the syncing. 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.

How to sync office 365 with onedrive