If your organization still uses SharePoint Server 2016 or earlier, users can't use the new OneDrive sync app (OneDrive.exe) to sync files. They need to use the previous OneDrive sync app (Groove.exe). This article helps you install Groove.exe. If your organization uses SharePoint Server 2019, users should use the new OneDrive sync app (OneDrive.exe). Learn more Install Groove.exe with Office 2016