iPad 'Cannot verify server identity' error

Had issue since October 25th. iPhone 7 and iPad Pro. Deleted and reinstalled offending Outlook email account 3 times. Checked Date and Time. Reset all settings on iPhone. Went away for periods as long as 12 hours, but it keeps coming back.

This same “Cannot Verify Server Identity” issue has started happening for me since at least November 20, but the error popping up is for “google.calendar.com” instead of Microsoft. When I click on Details, it cites “captive portal.Nokia.com” as being “Not Trusted.” Are others now experiencing this regarding Google accounts? I’m also confused about what role Nokia plays here because I have no Nokia accounts. Any insight would be very appreciated. Many thanks.

I get it whether I am on Wifi or using LTE. I have tried deleting my Gmail account and reinstalling it, and I still get the messages. I have never changed the date on my iPhone, and it is still set to "set automatically." so that is not the issue. I have attached images of the messages below:

Finally on page 13 someone has the same issue as me (almost). I don't use Outlook, I use gmail on my iPhone 7+. I too have been getting the same annoying pop ups but they are saying imap.gmail.com and when hitting the detail button I get the same Nokia portal crap as the other user. I too have no clue what Nokia has to do with this nor have I ever had any Nokia product or account. This is across the board and not tied to just Microsoft mail.

Same thing is happening to me. I'm getting the imap.gmail.com pop up over & over and when hitting 'detail' I get the same Nokia portal message you are. So this is really perplexing as the other 14 pages on here are regarding Outlook. Since it's across the board does that relegate the problem to Apple?

Also, after that started I had problems logging into other apps.. just couple. But their system would say that I didn’t have account there and when I put my info in it would say that my info already being used.. can’t be sure that had anything to do with the glitch but two separate situations with same results happend after this glitch l

I think I found a fix. I have an iPhone 11 Pro also, and this just started happening today. You can identify which mail account is causing this error message. Mine was an old hotmail account. I deleted the account from my phone, and then I added it back in. That seems to have taken care of the problem, fingers crossed. But so far so good.

I had an older live.com email account that I believe was the issue. I deleted the account and then added it again. I did notice that before deleting it had Notes selected for the account (along with mail, contacts, calendar, reminders) but when adding it back Notes was not an option at all. I have not had the pop-up errors anymore.

It’s been few hours now and all good.. my iPhone stopped the error message immediately after I uninstalled outlook and all the info with it. I reset phone as well. Not sure that helped but did anyway

Thanks for the solution for that annoying message about server identity. If I remove outlook from my iPhone 11 will it delete my hotmail email I’ve had for many years. I’m 80 and not a techie so forgive the ignorance please. Thank you.

Thank you for the solution to that annoying server identity problem. If I remove outlook will it delete my hotmail account I’ve had for many years? I’m 80 years old and not a techie so pls forgive my question. Thank you.

This started after the latest update. It’s crazy-making. No reason, specific or apparent trigger or trend and haven’t found a solution to resolve it. It’s occurring on my ancient yet valuable hotmail account.

help please.

I have the same experience it started with the keyboard slow to respond. Now I get Cannot Verify Server Identity (in bold lettering) then under that is "The identity of 'imap-mail.outlook.com" cannot be verified." This pops up randomly and I have to press "cancel" but it pops up again. How can this problem be resolved?

Same problem as everyone else. Has been happening since Oct. 30. Message pops up constantly. I tried fiddling with the date/time setting, as I saw elsewhere and it would be fixed but only for a little while. I reset network settings, bupkis. Deleted my email accounts and reinstalled them and something I noticed about the outlook.com account when it reinstalled is there was no SSL able to be checked (ie: Advanced Settings: S/MIME; Sign (everything greyed out) and Encrypt by Default (greyed out also). So I guess the security certificate is still a problem with Microsoft? Does this mean all my emails can be hacked now? Ugg. I don't think Apple monitors this community but I hope someone comes up with a solution quick. My phone is unusable at this point.

For all of you who think it is fixed by deleted and re-adding your outlook.com account, I don't think that is a solution. It might resolve the pop-up notice temporarily but the S/MIME aren't available. I don't want a pop, I want imap. There is clearly some problem between Apple and the Microsoft security certificate but I don't know how to fix that. But if you look under Advanced settings you will see that it looks different than it did before you deleted it and reinstalled it.