Microsoft Exchange on my iPhone keeps asking for a password

I had a similar problem.

My fix was that I deleted the 'account', then used the same credentials to add back the same account, BUT adding as outlook.com, NOT Microsoft Exchange as it had been set up.

Like this:

On iPhone, select 'Settings' > 'Mail" > 'Accounts' > select desired account and click 'Delete Account'.

Reboot phone (not sure it's necessary.)

Then, select 'Settings' > 'Mail" > 'Accounts' > 'Add Account' > from the list, select 'Outlook.com' and follow the prompts to 'add' the same account you already had.

I did the same thing on my iPad and it worked there as well.

Hope this helps - the problem was driving me nuts.

This is happening to me too! The last 36 hours. It says I need to enter the exchange password, and when I do it says the password is incorrect.

I have reset password, restarted phone etc. after restarting the phone it didn’t do it for approx 12 hours but I woke up and it was doing it. It asked me 4 times for the password and kept saying it’s incorrectly and on the 5th time I hasn’t hit enter and it disappeared and all my emails came through.

It is driving me insane!

The password is correct (I even I changed it) and I can log in using that password on any other platform other than the apple mail app. This is happening with a hotmail email address.

I have had this same problem since yesterday for both of my exchange email accounts (Hotmail and MSN) on my IPhone 15 Pro Max and on my IPad Air. I have tried restarting both devices and deleting and re-adding both email accounts. I had Microsoft reset a new password for my Hotmail account as I wasn’t sure what the correct password was. Now my IPad continues with the incorrect password pop up and my iPhone says I’m not connected to the mail server. One of my accounts is a joint email with my husband. Our joint email account is fine on his Iphone. This is extremely frustrating!!!!

This is what MS said about the issue on 26th: https://support.microsoft.com/en-au/office/outlook-and-other-apps-are-unable-to-connect-to-outlook-com-f4202ebf-89c6-4a8a-bec3-3d60cf7deaef

Last Updated: January 26, 2024

ISSUE

Outlook and other apps are unable to connect to Outlook.com.  

Some users have reported that signing in with an App Password works to connect but later goes back into a disconnected state. 

Since starting around 1/23/24 users have reported issues connecting with Outlook 2013, Outlook 2016, Outlook for Microsoft 365, Thunderbird, and mobile email apps when connecting with POP, IMAP, and Exchange connections.

Related discussions are in this Answers thread.

STATUS: INVESTIGATING

What fixed it for me is going to settings, then calendar, then accounts, then click on the exchange account and re enter the password.

Microsoft Puts RESOLVED …

but I change my accounts from exchange to outlook and now the ERROR is They can’t CONNECT TO THE SERVER!!!

anyone with this ????

ios 17.3

I posted on the Microsoft forums about this and was pointed in the direction of this thread -

https://support.microsoft.com/en-au/office/outlook-and-other-apps-are-unable-to-connect-to-outlook-com-f4202ebf-89c6-4a8a-bec3-3d60cf7deaef

Not particularly helpful right now, but they are aware of the problem…

If it’s OK using the Outlook app, then the first step is to go to Settings/Mail/Accounts, tap on the MS account and delete it. Next restart your phone. Then add the account back. If that doesn’t fix it Microsoft has changed the requirements for 3rd party mail apps (other than Outlook); they no longer support simple passwords, and you may need to set up the account differently. So the place to go is Microsoft’s support site.

I’m having same issue with iPhone XS and it started few days ago. I’m able to fix the issue for few hours by generating an application password in my Microsoft account settings. The problem is that after few hours I get the same error again. It’s really frustrating to have to do this few times every day. I wonder if the problem has something to do with the iOS update 17.3?

I will try but I am only having the issue with the mail app. It’s okay via the outlook app, via website - chrome and edge etc. I find it odd it’s only happening on an apple product (app) so i assumed it would an apple/ IOS issue (also no 2 factor or vpn - I saw your comments above)

Oddly enough, I'm having the same problem at my end, with the only difference being all is good my iphone (XS) but not with my older ipad 4 Mail app.

Will try deleting that account on the ipad and creating a new one with identical specifics. I seem to remember a problem like this some 5 - 10 years ago as well and kind of remember being left with creating a new account as a solution without reason.

Ah . . . . . somewhere along the way I missed this . . . .

Outlook and other apps are unable to connect to Outlook.com - Microsoft Support

Your email stays on the Hotmail server somewhere and comes right back as soon as you redo the Mail settings