
I suggest you choose one machine to go to Startup tab in Task Manager, check whether there is Microsoft OneDrive enabled.
And then go to OneDrive client > Settings > check whether the box of "Start OneDrive automatically when I sign into Windows" is ticked.
If not, please try to run command %userprofile%\AppData\Local\Microsoft\OneDrive\OneDrive.exe
on clients.
Please also ensuer the policy "Prevent the sync app from generating network traffic until users sign in" is disabled or not be configured.
Besides, I find a thread below, please check whether this is helpful.
Start OneDrive when windows starts - All domain computers
If an Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.