Apple Mail on iOS15 / Outlook.com MFA Application pwd

I have this exact issue. iOS15.0.1, iPhone 11, on-premise exchange, no MFA, iPhone mail client. Password lasts 2 days at most without prompting to be put in again. It acts like it's got an incorrect password. Does NOT do this for the Gmail account I have, only for exchange. Please fix this, not only is this annoying, I am missing work emails.

I am having the same issues,

Password is entered and it works for one day.

Then it reprompts. Enter the same working password, and it works for another day.

No issues with yahoo, gmail accounts. Only the outlook account

Iphone 12 mini IOS 15

I'm experiencing the same issue. I spent 45 min on the phone with Apple support and worked with three different reps. they all said no one has reported this issue before. Glad to know I'm not alone!

I have worked extensively with our IT dept and they have yet to find anything on our Exchange server that would cause this.

Mine goes 1-3 days between prompting for the password. I have tried multiple times with wiping the phone and starting over. I then added mail accounts in different orders each time and no matter what, as soon as I log into my iCloud account, the phone prompts me for my Exchange password.

iPhone 13 Pro Max with iOS 15.0.1

I’ve got the same problem since iOS 15 with my work email. After too many password attempts I get locked out and IT has to unlock the account. I ended up deleting the account and installed the Outlook app for that account. I guess It’s a work around for now.

same problem as all. Only on native Apple Mail app and my Exchange work email account do I have to reenter password every morning. Also have Outlook app on same iPhone 12 Pro running iOS 15.0.1 and that allows work email without requesting password to be reentered.

I am having the same issue too. Only happening on my Exchange account. All other accounts are fine.

I was wondering if it has anything to do with Mail Privacy Protection they added?

Whatever it is, it is annoying and needs to be solved ASAP

Im not sure if this is relevant, but I have outlook configured on two devices, ipad and Iphone.

every time is asking to input passwords on one of the devices. The other one will fail to open outlook

it seem is resetting the password to the previous one some how.

The point being I suspect two devices cant have running outlook simultaneously, but is just a hunch, apple should check in to this.

I think you are on to something there with the Outlook account on multiple devices. I have that account on my iPhone and my iPad and I get the password incorrect for Exchange account once per day per device. I have deleted the account from my iPhone and then added it back and that didn’t help. I still get the message on both devices. Just now I deleted the Exchange account from my iPad. I’m going to leave it deleted for now and see if I continue to get the message on my iPhone or not. If I don’t get the message for a couple of days then I will add it back to my iPad and see if it starts again with the same message. If it does then I will delete the Exchange account from my iPhone for a couple days and see if I get the message. If I don’t get the message when either one is the sole device with the account on it then I will know that the problem is related to the account being on multiple devices at the same time. This could also narrow it down to see if the iPad is the one causing it or if it is the iPhone is causing it.

I already tried that one. I deleted it from my iPad and I still have the issue. Try logging out of your iCloud account on either device and then add the exchange account back. Leave the iCloud account logged out for a couple days. If you don’t get prompted for your exchange password, log back into your iCloud account.

I will bet that almost immediately after you’re logged in, you’ll be prompted for your exchange password.

I am having the same issues - with my work email so exchange mail box - after a few hours it asks to renter password . But seems Apple does not want to acknowledge this as a big frustrating support I must say - basic functions not working seems like with all the enhancements we still can’t get the basics right no matter how much we improve tech

I have exactly the same issue!

My company uses Exchange 2013, no changes made to the Exchange server and since upgrading to iOS 15 email app at least once a day is asking for a password. This does not appear to cause any issues for any non Apple Users or those with older iOS versions.

The problem is, my domain account is highly privileged meaning when the wrong password is provided 3 times, the account is locked out until manually unlocked. When my account has got locked out for 2 days in the row, a security investigation was launched in to reason why the account was locked out yet again and whether the company is being attacked. This has taken up business time and resource to look in to an issue caused by an iOS Update, totally unacceptable

This is causing my account to be locked out EVERY SINGLE DAY stopping me from being able to work!!!

Hello all,

Look I do not know if this is the issue or not, but I have managed to fix it. I don't know if it will ask me to put my password again after few hours... I guess I will find out later.

As for now... Investigations show that if I login to My Office on web browser then navigate to settings and then to sign ins... all my recent sign ins are from a different country (i.e. United States) whereas I am living in Australia. My company's policy does not allow to sign in from United States.

So that prompted me to go check my VPN and surely my VPN is on "Always On" for privacy/security purposes. I turned this off temporarily and tried to sign in... guess what it worked and also on my recent sign ins, it shows Australia.

So, I am pre-maturely concluding that this might be the issue, but it can be different. Try it, maybe this works for you too.

I have turned my VPN back on and send a test email... all works... not sure for how long but worth giving it a go...

If you don't have a VPN, try your mobile security app... maybe firewall issue... i don't know... just guessing here...

No worries mate.

Yes you are right .... no issues prior to update...

I will still encourage you to go into your Office Settings and look through 'My Devices' and also 'My Sign Ins", that may direct you to the right solution...

Other people reading this... just wanted to add that once the VPN is off, you will need to sign into each Microsoft App prior to turning your VPN back on such as One Drive, SharePoint, Office, Excel, etc.

Have a good one!!

I have the same problem on IOS 15 for my Outlook account. I enter the password, everything works fine for a few hours and then it prompts me to enter the password again suggesting that the older password is incorrect. All the other accounts, gmail, yahoo etc are fine.

This seems to be a problem only on Apple’s native Mail app and Exchange email account. I also have Outlook mail app on same phone 12 pro and it doesn’t prompt for password every 24 hours but the Apple Native Mail app does.