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Windows 7: Printer driver digital signatures

15 Dec 2014   #1

Windows 7 Home Premium x64
Printer driver digital signatures

I had installed an HP DeskJet F4280 All-in-One printer and recently discovered that one of the printer drivers has no digital signature.

---> C:\WINDOWS\system32\difxapi.dll

All the rest of them were listed with full signatures. Any ideas as what to do in regards to this issue? All help would be greatly appreciated.

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Printer driver digital signatures-win7_forums.jpg  
My System SpecsSystem Spec
15 Dec 2014   #2

Windows 7 Ultimate 64-bit, Windows 8.1 64-bit, Mac OS X 10.10, Linux Mint 17, Windows 10 Pro TP

My System SpecsSystem Spec

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