Could not load ISAPI FILTERS FOR SITE DEFAULT WEB SITE

hi

Today

 I applied the latest 4.7 .Net framework update which again
broke the IIS web front end. I did manage to look in the
event view and found a number of Event 2268 errors:

Could not load ISAPI FILTERS FOR SITE DEFAULT WEB SITE.

This issue occurs when I try and patch with window updated the application falls over so then I revert and it works then.

Filter Values:

C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_filter.dll

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_filter.dll

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_filter.dll

Any help would be appreciated.