Thanks Jose, but no help. Viewing installed Windows Updates in Programs and Features shows the last Microsoft Windows Updates were installed 1/16/2014 - too far back for System Restore or Last Known Configuration That Worked. Since Windows Update will not launch, I may replace all the Windows Update Files in System32 in case one is corrupted. First, I will try to run wuapp.exe as Administrator from System32.
Just found this Microsoft Windows Update Troubleshooter - will try.
http://support.microsoft.com/kb/971058
I will probably run more virus/PUP scans from other programs listed above as well.
Any other suggestions by anyone?