Unable to sync after reboot

Hi everyone,

I'm facing a problem with several users in one of my clients. We just deployed a new Office 365 Tenant and migrated all their documents to a SharePoint Library. All users have synced part of the library with their PCs. The initial sync worked properly and everything seems that worked ok, but when they reboot their computers or just sign-out and sing-in their Windows account, their OneDrive client doesn't connect again to the SharePoint Library. We tried to update the OD client to the latest version and also reinstalling OD with no luck. All affected users have Windows 10.

Does anybody have any idea of what can be happening? I've been googling for a while but I didn't find anything.

Thanks in advance!