https://www.bleepingcomputer.com/news/microsoft/microsoft-shares-workarounds-for-windows-group-policy-issues/ > Microsoft has acknowledged a known issue where copying files/shortcuts using Group Policy Preferences on Windows client devices might not work as expected after installing recent Windows cumulative updates released during this month's Patch Tuesday. > On affected systems, files or shortcuts will not copy to the target drives or end up as zero-byte files when using Group Policy file operations.