Hi @Reece Saxon
We may choose which folders to sync, but we cannot set which files to sync via OneDrive UI.
I suggest you go to OneDrive Settings > Sync and backup > Manage backup
, check whether you backup Desktop, Documents, and Pictures folders with OneDrive.
If so, it's recommended to decide one folder you want to turn off backup, such as Download, go to Windows Explorer, copy the content that you need to stay on this gamebook from Download to other local folders, no OneDrive folder.
Then go back to "Manage backup", stop backup Download, and go to Account > Choose folders
, cancel the sync for Download.
And then please copy the content back to Download folder.
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