Cannot install an unsigned printer driver on Windows 8 64 bit computer

April 10, 2013

Sharp Technical Tip 060313_2 (See PDF below).

Note:  In most cases, Digitally Signed (WHQL) Windows 7 64 bit printer drivers will install successfully and function properly. Please download a digitally signed Windows 7 driver for your Windows 8 computer HERE. In many cases, Digitally Signed Windows 8 drivers will become available in the future.

By David Bruni (Sharp)

Below are the steps to turn off driver signature enforcement in Windows 8: 

•Make sure you are signed in •Press Windows-I to load the Charms Bar (Appears on the Right side of the Screen) and select Settings.

•Click on Power, hold down the Shift-key, and click on Restart to restart the PC.

•You should see a troubleshooting page come up. Click on Troubleshoot here, and on the next page on Advanced options.

•Here you find several options, including automatic repair, system image recovery and startup settings. Click on the latter to change the startup behavior of the Windows 8 operating system and click on Restart again on the next page.
•Here you should see an advanced menu with nine different startup options. Press 7 or F7 to disable the driver signature enforcement. Windows 8 should restart the system automatically and the drivers that you have installed or are about to install should be working from that moment on.

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