Here is the Dell stuff you posted so far...
At your Inspiron 3847 Desktop site, I see...
Dell Customer Connect Not at site (my version is 1.3.28.0 - ha!)
Dell Digital Delivery: 3.1.1002.0 Site is lower
Dell Help & Support: 2.1.59.0 Same at site (you took it earlier in this thread)
Dell Support Assist: Not at site (we've got same version)
Dell Support Assist Agent: Not at site (we've got same version)
Dell System Detect This one downloads when we click "Detect Drivers". I uninstall it afterwards.
Dell Update Application: 1.8.1114.0 Site is higher. Also, v.1.7.1007.0 is there, under "Other versions".
So, of those, there is no test for Dell Update - except to see whether it will update itself. I don't quite understand how/why the version you've currently got (1.7.1015.0) isn't there as a previous version. My earlier guess was that Dell Update updates itself from a different site. It could also be that Windows Update brought that one in (before you turned the feature off). If so, you'd have to turn it back on to get your current version back - if you uninstall it for 1.8.1114.0 & not like the change.