Certificate trust button

Use the above to remove any added management profile, and then remove any added McAfee apps.

If there are any McAfee apps installed, one or more of those is seemingly intercepting and reading your mail, and failed.

Add-on anti-malware apps cannot scan an iPhone.

The add on “security” apps can try to intercept your mail and other traffic, though.

JS-fromDK wrote:

If you have an Outlook/Hotmail, try deleting it. See if that fixes the problem.

FWIW, it is unlikely Hotmail will be using a McAfee cert, and there’s no means to add a cert into an iPhone mail account setup, save via MDM profile. This is why I’m “digging” in the router, and in connection-common devices in the path to Hotmail here.

Are you using a school or business Wi-Fi network to connect to Microsoft Hotmail? If so, try connecting from cellular.

To confirm… You installed this add-on anti-malware app on a second and different system (a Mac), and not on this iPhone, and are getting this on an iPhone that did not have that stuff installed?

Did you also install or configure McAfee on your local Wi-Fi router, too? Does this same error happen when connected via cellular, or via an unrelated Wi-Fi network. Is this error tied to your.Wi-Fi network?

A second computer should not be involved here, not unless it is somehow still hijacking local network traffic, and a second and separate system should not be doing that. Not unless McAfee was also installed in this iPhone, or was configured on this iPhone, or was configured on a shared component such as the Wi-Fi router.

I have exactly the same problem. Spent 1 hour with Apple Support yesterday. I made sure I iOS was current, checked that iOS carrier setting was current, force restart Mail app, removed all email accounts, reset iPhone (wi-fi setting), restarted my phone. Nothing helped. The error message is still there on iPhone and iPad. Apple Support suggested I contact Outlook. SOOOO frustrating!

There are lots of folks on reditt too having this issue. Century Link service seems to be a common denominator amongst those getting these messages as well.

genekir93 wrote:

No , I don’t as suprised, not on the iPhone

Okay, are you using Hotmail in that iPhone?

Are you connected on on a school or business internal network?

And if so, does this same error also happen when connected by cellular?

This started on my phone as well day before yesterday. I have reset my settings and been on apple support chat, but nothing has worked so far. I don’t even use McAfee on my phone and cannot find the certificate to delete it. Any other advice???

I did an IOS update last night. So far, I am not seeing this same pop up you mention. I also spent a lot of time with Apple support the day before yesterday, but that didn’t help. I am keeping my fingers crossed that the IOS update fixed this.

Please check with Hotmail, too. This is all with one Hotmail server, though which of what can be multiple servers that probably make up m.hotmail.com is unclear; we can each be getting one of a set of different servers when we use that host name, due to the way content delivery networks work.

@MrHoffman: I have seen a lot of posts with this same problem today, and all of the posters say they don’t use McAfee. And most have also said they have a hotmail certificate problem.