OneDrive client in Conditonal Access
The only way to set up Conditional Access for OneDrive Client is to use "Sharepoint Online".
It is not possible to create a rule that affects only the OneDrive sync client.
We want the opportunity to create a Conditional Access rule only for OneDrive client.
This is now available in Preview for Windows computers, it requires a registry edit on the client side to enable it. Still no support for controlling the OneDrive Sync client via conditoinal access for MacOS. https://docs.microsoft.com/en-us/onedrive/enable-conditional-access