Bulk unblock downloaded files to fix Windows 11 PDF preview issues after the KB5066835 update.
Windows 11 • Version 1.0
Auto File Actions unblocks files so Windows Explorer preview works again. Add folders to watch (optionally including subfolders) and everything gets auto-unblocked as files arrive.
Custom file automation rules are available for power users who want additional functionality.
This tool was originally created to solve the KB5066835 preview problem after the update prevented quick PDF scanning in File Explorer. Windows marks downloaded files with "Mark of the Web" (MOTW) metadata that blocks preview functionality. The default action removes this metadata bit to restore preview, with optional custom file automation for users who need it.