Prevent guest users to Sync

Question

What settings do I need to check to prevent guests from syncing files from a Team Site (no office group)?

The feature I'm talking about was requested here

https://onedrive.uservoice.com/forums/913522-onedrive-on-windows/suggestions/7881969-allow-external-onedrive-for-business-users-to-sync

It looks like it is enabled by default now, and we want to prevent this.
I don't see any settings under the sharing policies.

Is there a PowerShell command to disable it tenant wide or per site?

Answer 1

I don't think you can disable the Sync for the guest users, but perhaps other options will work. Here is what another Greg is suggesting:

Option 1: Disable sync at the library level

• Navigate to the library where you want to disable sync, then click Gear Icon > Library Settings
• Click on Advanced Settings
• Scroll down to the middle of the page, and under Offline Client Availability, select No (default is Yes)
• Click OK at the bottom
• You will now notice that the library lacks a Sync Button

Option 2: Disable sync at the Site level

• Navigate to the site where you want to disable synchronization. Click Gear Icon > Site -Information
• Click View all site settings. If on the classic wiki page, you can click Gear Icon > Site Settings instead of these two steps.
• Click on Search and offline availability under Search
• Under Offline Client Availability select No (default is Yes)
• Click OK at the bottom of the page

How to disable sync of user’s OneDrive

• App Launcher > Admin
• Navigate to OneDrive Admin Centre
• Click Sync, then check Allow syncing only joined to specific domains checkbox then
• Specify the list of domains you want to allow to sync.
• click Save.