softwaremaniac Moderator, Windows Update Instructor Joined Oct 9, 2014 Posts 27,219 Location Croatia Oct 18, 2019 #21 Add Missing Package 1. Click the Start button and type cmd.exe in the search box. 2. Right-click on the cmd that comes up and select Run as administrator. 3. Once you are at the command prompt, copy/paste the following line and hit enter. pnputil -a C:\Windows\WinSxS\amd64_cpu.inf_31bf3856ad364e35_6.3.9600.19478_none_4e17494bc34cb99c\cpu.inf Let me know if it says successfully installed. If it does, try installing the update again and attach setupapi.dev.log if it fails. Note: If you get a warning about the driver being unsigned, please allow the install. Note2: You may need to disable digital signature enforcement in some cases: How to Disable Driver Signature Verification on 64-Bit Windows 8 or 10 (So That You Can Install Unsigned Drivers) Refer to Option 2 in the article. Good night.