My Windows 7 x64 has not upgraded since 12/11/2016. Running check for new updates never provides results, just keeps running check. Last update was Windows Malicious Software Removal Tool Nov 2016 and Update KB3177467. I ran "Fix problems with Windows Update" with no results. I found link to Security Update https://support.microsoft.com/en-us/help/3212642/january-2017-security-only-quality-update-for-windows-7-sp1-and-windows-server-2008-r2-sp1 but not certain whether I should attempt download of MS17-004 until I know what the problem is. That leads to two Service Packs for Win 7 x64. Anyone know whether I should attempt to download those? Or other advice? Thanks much!