How to Shut Off the Valid Digital Signature in Windows XP


Digital signatures enable you to verify the identity of a file's publisher. If a file does not have a digital signature, you cannot be sure of who wrote it or if the file was tampered with before distribution. Digital signatures are not without flaws though. They cannot prevent you from unknowingly installing a virus and they may cause problems during program or driver installations. Turning off the valid digital signature tool in Windows XP will stop installation errors from occurring, but it will also expose your computer to unverified files.

  • Click the "Start" button on the bottom left side of your desktop.

  • Click the "Run" button, and type "regedit" in the Run box. Click "OK."

  • Locate the "HKEY_LOCAL_MACHINE\Software\Microsoft\Non-Driver Signing" key in the registry.

  • Right-click on the "Policy" binary value. Select the "Modify" option.

  • Delete the current value. Type "0" in the box, and click "OK."

  • Select the "File" option from the menu at the top of the window. Click "Exit" to quit the registry editor.

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