How can a correct "The server for account "Me" returned the error 5.7.8 Bad username or password (Authentication failed)."

I am having the same issue and i'm EXTREMELY frustrated. Worked for the last year, woke up this morning and i keep getting this error over and over. I've entered my correct username and password but it keeps popping up this error. I can receive emails but not send them. This is for outlook for mac 2011.

I can log into icloud and send emails through it, i can send emails through my iphone but not through outlook. ***!!

In typical apple fashion i called them and after being on hold for 30 minutes they tell me it's microsofts problem. I call microsoft and they tell me it will cost me $49 for them to answer my questions. What a royal PITA!! 😠

This procedure was complete for me and it resolve the issue. I supose that the problem is the number 1 below:

1. User name is just the first part of my email address, without the "@me.com" bit.

2. Password, of course

3. Incoming server: imap.me.com, port 993

4. Check "use SSL to connect"; uncheck the other two options under Incoming Server

5. Outgoing server: smtp.mail.me.com; port 587

6. Check override default port

7. Check Use SSL...

8. The "use incoming server info" bit that I wrote about earlier

That's it

I had the exact same issue this morning when I got up - quite out of the blue. The above procedure worked for me also, but, to clarify:

• Under account settings in Outlook, you should navigate to "More Options" under the Outgoing Server settings.
• Select User Name and Password in the Authentication drop-down (mine was defaulted to "use incoming server settings")
• Follow the steps show in 1 and 2 above (at the minimum)

This immediately fixed my issue. Why did it happen? No idea, but at least it seems to be working...

What JPezmonic recommended worked for me. Thanks!

Like everyone else, I don't know how this happened in Outlook. I had several emails stuck in the Outbox that I didn't notice, but I was able to send them once I opened them and then hit "Send" again. I usually have problems with GMail and Outlook, but now it looks like Apple email accounts have entered the fray. I've use a @mac.com email address since they were first available, and I was worried that somehow Apple retired that address.

Thank you so much! I was getting crazy with this problem and now I finally solved thanx to you!

Awesome!

Thanks Thanks Thanks !!!! I did give up on it ! and tried to use another domainserver for outgoing mail .

They neraly had me using the Apple Mail Programm again (uncomfortable) But then i found your Article and now Outlook it works again !.

fine !

Wy doesnt APPLE tell everyone that they Canged the Autentification procedure ?

Well this Site here needs to be up to date by Apple then as well.

This is where everyone looks first

" http://support.apple.com/kb/HT4864 "

This has been driving me crazy! THANK YOU!!!!!!!!!!!!

So bizarre that 1 check mark changed randomly.

I had the same problem. Ich change my user name. By changing the incoming server name to: imap.me.com, port 993, the account was offline. I changed it back to: imap.mail.me.com, port 993 everything was fine and the problem is solved.

Thank you at all. Now I'm happy again.