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Windows USB Blocker is the free tool to quickly Block or Unblock USB Storage Devices on any Windows computer USB devices are one of the primary causes for spreading virus/malware from one system to another without the user knowledge. Often it is risky to allow others to insert USB stick (often infected with virus) into your system. Hence it is always advised to disable USB when you are not around. In such cases, Windows USB Blocker tool will help you to instantly block USB and safeguard your computer from these viruses. Here are the key features # Free Tool to block or unblock USB # Command-line feature to use in scripts & automation # Blocks only USB Storage Devices (USB Sticks/Disks) # Does not affect regular USB devices like wireless keyboard/mouse plugs, bluetooth/wireless/internet dongles etc # Simple tool with cool GUI interface # No need to log off or restart the system # Fully portable, does not require JAVA, .NET or other dependencies # Includes Installer for local installation & un-installation Windows USB Blocker has both GUI and command-line version and is successfully tested on all platforms starting from Windows Vista to Windows 11