Can't add accounts in Mail - stuck on "Next"

you are not using gmail account , it seems some vpn service or not sure which mail service is used , you have to ask the internet service provider ( is it pop account or IMAP account ) . it is not necessarily a bug .

I've got the same problem. Started with Mail not picking up Gmail. I removed the account from Mail and tried adding again but it wouldn't add. I can access Gmail on my phone and via browser but not with Mail. Then iCloud started acting up and now I can't access it either via Mail. Mail still can access my Hotmail account but won't let me add Gmail. Up until today, everything has worked for the past 5 years perfectly. I've followed the suggestions posted by Apple and others but nothing works. There's obviously a bug in Mail. Unless it's fixed soon, I'll be looking for another email client. Please get this fixed, Apple!

Another one with the same problem, had several severe problems with my Mac lately, seems like apple is loosing it, and I read all the replies apple comes with and it seems like they don't even bother to read the question before answering a bunch of crap. after iPad, iPhone, Mac, I really start to look into other makes, maybe they do care about their clients, smaller companies usually does. Did apple even find an answer to this problem, I don't see they did, just ignoring you.

Some problem here. Does somebody already know the solution?

I've already spent a lot of hours trying to fix this, but nothing seems to work. It's really annoying, because like so many, mails are an important part of my mac.

If it doesn't get fixed, I'll have to give up my mac unfortunately, and all other apple devices will follow.

Hi John,

I agree with all of the above, apple is not what it used to be. I had the same problem, tried everything and finally got it solved before the Mac went out of the window. Well, you might not be happy with how to fix this problem, but I share it with you and then you decide;

1. Back up all your files, don't use time machine, you won't be able to read your files later.

2. re-install high Sierra from scratch, don't use repair, time machine or any other solution, install as new, I hope you know how to do this, cmd+S when you start, format your disk, install high Sierra as new.

This was the only way I found fixing the problem.

Good luck, Preben.

I have the same problem. I can easily add a new email account, but I can not add one that has been removed. And just as several others I removed it as Mail just wouldn't synchronize my account, stating that either account or password was incorrect. Not so much. So annoying.

Installed another email client om my Mac and it works fine, embarrassing for Apple not fixing this problem.

I have the same issue... I can't set up an Optonline email account using "other" . After entering email address and password... I select Mail and Notes (only options they present) and hit Done... The "Next" button turns blue.. I hit it and nothing happens... Extremely frustrating

I had the same e-mail adress as my Apple ID (not an @icloud.com address) and I think this caused a conflict. Wha tI did was to remove my iCloud Login on OS X and then reset the OS X Keychain. Also did a reboot for this. After that I added the iCloud account again and it added my third party e-mail account automatically. Good luck!

*sigh*...I have the same problem. Glad to see it's not just me...but would be really nice if there was a fix for this! I had noticed my iCloud had stopped syncing my files. Turned off the account, tried to re-add, couldn't do it...same issue as reported. Tried adding a different email address from my work...same issue, button just keeps saying "Next". So frustrating!

I have read all the replies queries. here is a conclusion i drew:
you have had your account configured earlier. You were stuck at some point for which you had to reconfigure your accounts back to Apple Mail. But your account fails at a certain step.

can you give one more thing a try?
go to your desktop screen. click on Go>Go to folder

now locate ~/Library/Mail/V5/

You can find a few folders with names as long hexadecimal codes. These are your files that represent the profiles that were ever configured to your Apple mail. move them to trash.

I feel these local files of your emails might be interfering the second time you are configuring your account.

rever to me if that really works. i am just assuming.

Not that I have an answer. But Ditto on the problem. Interestingly, I downloaded a free program "spark" and was able to install the problem accounts. It's happening with Exchange, an email server that is run on Zimbra. I am certain there is a problem in the "Mail" software

jsfromsweden and mth222 solved it for me. I created a new user and was able to create the email account. Logged back in as myself and deleted the keychain files (as I had nothing in there I cared about) . Again, I was able to create the required email account. Thanks to both.

Your 7 hours of **** paid off for me as well. I was holding out, hoping that maybe installing Mojave would resolve the issue, but alas it did not. Followed your directions for creating the other account and testing, then deleting the keychains worked for me. Thank you for sharing!

I recently update my OS to mojave. Does this method work on mojave or only for High Sierra?

Anyway, I was able to add the problem email (my 2nd email) to the ‘Test Admin’ account but when I restart & go back to add the problem email to my Main Account, it is still stuck in the ‘Next’ button loop.

In your step to remove all items under keychain folder, do you mean ‘ALL’ that are under this, including any sub-folders?

As you mentioned, the problem exisist in the keychain and I already removed the files under keychain folder except the sub-folder w/bunch of other files.