A while back, I developed a PowerShell script that I use for creating air gapped backups of my file data. Even though I put a lot of effort into building this script and testing it over and over again ...
Before you can change an ACL, you must get the current one. There are two ways to do this with PowerShell. Learn how to get the current ACL and modify it.
I'm able to execute wbadmin start backup -backupTarget \backup-device\file_backup\ include:d Folder1,"d Very Important" -vsscopy -quiet via cmd.exe just fine. However ...