To unblock multiple files in Windows 11, use Windows PowerShell to run a single command that unblocks all files in a folder and its subfolders:
1. Open PowerShell as an administrator
2. navigate to the folder containing the files
3 run dir -Recurse | Unblock-File to unblock all files and subfolders
or
4. run dir | Unblock-File to only unblock files in the current directory