Hi Jane,
Thank you for querying in this forum.
From your description, it seems that you cannot sync SharePoint library to the local and when you clicked Sync, nothing happens.
At the same time, you stored Power BI desktop files in SharePoint document library, however, when you open Power BI files, it will take you to file explorer instead of opening it in Power Bi desktop.
May I know if my understanding is right? If so, for opening Power Bi files from SharePoint via the Power Bi Desktop, per our search, if you want to open Power Bi files which are stored in SharePoint in Power Bi desktop, you may need to sync files to the local, then you can open it from File explorer. For your reference: Open PBIX File from SharePoint
Then we will focus on your SharePoint library sync issue, for syncing issue of SharePoint Document libraries, we have also tested it on our side and we cannot reproduce the same situation as yours.
Given this situation, to narrow down this issue and better understand your situation, could you provide the information below?
- May I know if all SharePoint document libraries have the same problem?
- Could you provide the screenshot of “it says 'copy library ID'”?
- May I know if the other colleagues have the same problem?
- Could you provide the version of your OneDrive sync client? You can click cloud icon at the right upper corner of task bar in Windows > Settings > About and provide the screenshot of it.
Your understanding and patience will be highly appreciated. I hope that you are keeping safe and well!
Best Regards,
Sukie