Found the answer to my own question in another post. Since it seems to not
be an uncommon problem, here's what I found....
By renaming/deleting the SoftwareDistribution folder you will lose your WU
History
listing (not important). If everything is working okay again you can delete
the
renamed SoftwareDistribution folder.
Renaming the SoftwareDistribution folder
Click Start, Choose Run.
In the Run box, type services.msc.
Click OK.
Right-click the Automatic Updates service.
Click Stop.
Stopping the service will take a moment.
Rename the "SoftwareDistribution" folder: a. Click Start, click Run, type
%systemroot%, and then click OK.
b. Right-click the SoftwareDistribution folder, and then click Rename.
c. Type SoftwareDistribution.old, and then press ENTER to rename this folder.
Click Start. Choose Run.
In the Run box, type services.msc.
Click OK.
Right-click the Automatic Updates service.
Click Start.