I bought an iMac from a company that was upgrading their computers. They assured me that it was clean of their applications. Just to be safe I did a wipe of the hard drive and reinstalled macOS High Sierra.
A problem arose when I was setting up the computer after the install. It asked me if I wanted the company to configure the Mac for me. I kind of ignored it since that was the only time I saw anything related to that in the weeks I've had it, until today when a notification popped up asking if I want to automatically configure my settings.
I called the company who patched me through to IT who assured me several times that everything was ok. To be honest, it has worked just fine. No issues at all - I'm just a little on edge. When I was setting up the computer it stated that the admin (company) would have access to files and apps, and can even see my Web traffic. Apple stated there's nothing that they can do. I'm stuck.
Here's what I've done to try to fix the problem:
Tried a clean install of macOS High Sierra again, with no luck.
Upgraded to macOS Mojave which didn't resolve the issue.
The only thing I can think of is the macOS base system (I'm assuming that has stayed the same.)
So what can I do? Everything I try doesn't get rid of the notification to set up my computer for the company. Somewhere there is some pre-installed software that won't go away.