I had same problem, supposedly AT&T canceled the service with McAfee 2 years ago. If you already, had it you could keep using it. After I harped at the customer service rep. They said they no longer support security for PC's. Only for Cell phones. I told them I never got a notice about this. Because after I rebuilt my computer, my former was W10. I upgraded it to W11 back in January. So, I would have had to re-download the app from AT&T. But I tried again searching and it still looked like the web pages are still up saying you can download the Security Suite. But when you try to download you can't. AT&T reps don't help. Most seem clueless. And give you a half-**** response. AT&T doesn't post that they canceled the services with McAfee on the web page. You can never get a proper answer. AT&T used to be very customer service friendly. And would help. Last few years they seem they just don't care. And they are trying to upgrade you to Fiber optic. Problem is Fiber-Optic Internet is not available everywhere. So, the other option is cell phones. You were told you get free Security app McAfee. Cell phone coverage doesn't cover your PC! So, I think AT&T should be sued for false Advertisement of its products and services.
Because the security link doesn't work or keeps looping. And you get nowhere. If other people get this same issue. Someone should get a Lawyer, and we could mass sue AT&T. This has been going on for quite a while. How hard is it to tell your customers that you don't do free McAfee security app and post it on your web page. they're just interested in selling internet services and cell phone and services. If others find this the same. they should be reported to FTC.