How do I stop the Yahoo sign-in request pop-up on my Outlook 365 Inbox?

I understand AT&T is now Yahoo and config is a bit different than the others. Keep in mind, I am a novice.

Actually, whether the account is "Yahoo" or not depends on the particular account and what servers are being used for your account which can either be <att.net> or <yahoo.com>

Depending on the version / build / channel of Outlook that you are using, you would need to use a <Secure Email Key> (if using att.net> servers) or a Yahoo <App Password> (if using Yahoo servers). You would have to check for the exact server settings for your account.

Some reference articles

Create a Secure Mail Key - AT&T Email Customer Support (att.com)

Set Up ATT Mail Settings for Microsoft Outlook 2016 - AT&T Email Customer Support

Generate and manage third-party app passwords | Yahoo Help - SLN15241

In reference to Yahoo accounts, there is also a recent change (as of Aug 2, 2023) for Outlook as it relates to the need for an <App Password> as described in

How to add a Yahoo IMAP account to Outlook Desktop without an App Password - Microsoft Support

To be clear about something, for the purposes of this, a <Yahoo Account> is considered to be any email account that uses Yahoo servers regardless of who the email service provider is. By that I mean, my ISP uses Yahoo backend servers for their email services so while the actual email address from them is a @rogers.com email address, it is a "Yahoo account"

*** I am not an AT%T customer so don't know if this would apply in any way to accounts based on <att.net> servers

I want to thank everyone for your help in solving my problem with the Yahoo pop-ups. It appears that all is working well (at the moment, at least!!!).

As some of you said, the problem started when Microsoft changed the server settings for my verizon.net email account to yahoo. I have no idea as to why they did that, but they caused me and many others to spend a lot of time trying to fix a problem that they caused, and didn't have the courtesy to notify any of their customers about what they did.

So, here is what I did for my verizon.net email account:

Incoming Server: imap.aol.com ; Incoming Server Port 933, SSL

Outgoing Server: smtp.verizon.net ; Outgoing Server Port 465, SSL

Then, to get my verizon.net email account to sync with my Outlook.com inbox I followed the instructions provided by one of you:

1. Logged into AOL email website.
2. Went to "Options" in the right-hand corner under my Account Name and selected "Account Info".
3. On the left side of that window, selected "Account Security".

4.Scrolled-down to "How you sign in to AOL"

5.Selected "Generate and Manage App Passwords".

6.Entered my verizon.net email address as the name of the app I am using.

7.Clicked the blue box that says "Generate Password".

8. Copied that password into the Outlook.com account setting space.
9. SUCCESS !!!

Thanks, again, for everyone's help.

Regards,

John Crisp

The pop-up occurs on my Outlook 365 desktop program (part of office).

I have a Verizon email address. A screenshot shows the email account window in Account Settings.

A screenshot below shows information on my Outlook version. Version 2307. Build 16.0.16626.20028, 64 bit.

I am not aware that Verizon/AOL has made any changes to my account.

I have no idea as to how Yahoo knows my Verizon email address. I don't want to deactivate my Verizon email address. I could change the password, and I could delete it from my Outlook synced emails and then re-sync it.

Thanks for your help.

First, just to make things less confusing in terms of terminology, what you are referring to as an <Outlook 365 email account> is actually the Outlook desktop 365 desktop program if the screenshot is a correct indication of things. It may sound like a nit but an Outlook 365 email account is completely different then the Outlook 365 desktop program (part of Office)

Your screenshot indicates that this belongs to a <Verizon> email account so if, from within Outlook, you go to

<File> --> <Account Settings> --> <Account Settings> --> <Email> tab

Do you have a Verizon email account? If yes, has Verizon made any changes to your account on their side of things? Verizin at one point used Yahoo servers but as far as I know, they now use AOL servers for their services (I am not a Verizon customer).

At the very least, any account using AOL or Yahoo servers requires the use of an <App Password> from the respective providers.

Also, in the interests of time, what Outlook version / build / channel are you using. To find that, go to <File> --> <Office Account> (similar to the attached screenshot)

.

Hi, I'm Karl and will be happy to help you today.

Can you expand a little on where exactly you are getting this sign-in request?

Just to confirm something, when you state "my Outlook 365 Inbox" are you referring to the Outlook desktop program (part of Office) - the forum in which this question is posted?

Is this something that just started happening without anything else having been done in Outlook?

Is there a Yahoo based account (any email account using Yahoo servers) configured in Outlook '365. To verify, from within Outlook, go to

<File> --> <Account Settings> --> <Account Settings> --> <Email> tab

Once there is a clearer picture of your environment, will be able to provide a more specific response.