Fix per Dell-Cares: "Here is the link from the website to resolve this"  
To whom it may concern: Every time I attempt to run the updates on my Dell INSPIRON 3671, the critical update (Dell Security Advisory Update) fails to load. I purchased this desktop computer in December 2019; however, I did extend my warranty in December 2020. Any help you can share would be appreciated. Thank you, Matt
Dell Security Advistory Update -- cannot be installed