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How To Install An Un-Signed 3rd Party Driver in Windows 8
This is when you having a problem when installing a software that is blocked due to un-singned 3rd party driver in windows 8. im having this when im trying to install a dot matrix printer Panasonic KX-11131e on a windows 8.1 runnning machine at office.
Firstly, you should try to change the UAC Settings before try the below guides, this is how ; how to disable UAC on windows or follow this steps for windows 8;
Disable UAC on Windows 8 or 8.1
Open up the Start screen, search for UAC, and you should see an option for User Account Control settings. If you don’t, you’ll need to change to search through your Settings first, but then you should see it.
And then you can drag the slider all the way to the bottom, the same as for the other versions of Windows.
After doing the above steps as proposed, you may need to update your panasonic kx-1131e dot matrix machined driver to windows 8 update driver from following link;
Hopefully this will help you guys as it did help me settle mine, thanks to the original poster.