I've documented it within the blog post Windows 7: Error 0x80248015 in Update Search (Dec. 4, 2017)
A simple workaround so far (until MS fixes the expire date) is to uncheck the option to update other Microsoft products - as mentioned within the blog post.
Finally, Thank you GBorn for a workaround that actually works on my Win7 Pro 32 bit computer. I unchecked the option to update other Microsoft products and now Windows Update DOES check for Windows updates. I also was successful in updating Microsoft Security Essentials Manually through the MSE program itself.
Judging by the large number of users seeing this problem, I would conclude it is a Microsoft problem at their end. Using the workaround should allow us to get the Fix when it actually occurs.