Your PW needs to be a generated app PW - see https://help.yahoo.com/kb/SLN15241.html.

Settings:

IMAP - Server Name: export.imap.mail.yahoo.com - Port: 993 - Connection Security: SSL/TLS - Authentication method: Normal password

SMTP - Server Name: smtp.mail.yahoo.com - Port: 587 - Connection Security: SSL/TLS - Authentication method: Normal password

Thank-you, Ed.

Your PW needs to be a generated app PW - see https://help.yahoo.com/kb/SLN15241.html.

yahoo requires me to log in to the e-mail account to get that "app PW". I tried that via Firefox on the same new desktop as the Thunderbird in which I'm trying to add the e-mail account. yahoo rejected the login with no reason given. I used the little eye icon so I could see the password that I entered, and it was correct. I assume that if I entered the password incorrectly in that Firefox browser login, yahoo would ask me to try the login again, not reject me after one try.

Can the Firefox login for the "app password" and the Thunderbird in which I'm trying to add the account be different desktops with different operating systems? or do they have to be the same desktop and operating system? The Thunderbird on my old windows-10 desktop has the yahoo e-mail account working fine (at the moment!).

Thank-you, Ed.

Ed said

Your PW needs to be a generated app PW - see https://help.yahoo.com/kb/SLN15241.html.

yahoo requires me to log in to the e-mail account to get that "app PW". I tried that via Firefox on the same new desktop as the Thunderbird in which I'm trying to add the e-mail account. yahoo rejected the login with no reason given. I used the little eye icon so I could see the password that I entered, and it was correct. I assume that if I entered the password incorrectly in that Firefox browser login, yahoo would ask me to try the login again, not reject me after one try.

Can the Firefox login for the "app password" and the Thunderbird in which I'm trying to add the account be different desktops with different operating systems? or do they have to be the same desktop and operating system? The Thunderbird on my old windows-10 desktop has the yahoo e-mail account working fine (at the moment!).

If you can't log into the web interface to get the app PW, do the 'forgot password' thing.

OS shouldn't matter. Can you get the app PW from Saved Passwords on the Win10 PC and try it on Fedora PC?

Thank-you, Ed.

home user said

Thank-you, Ed.

Ed said

Your PW needs to be a generated app PW - see https://help.yahoo.com/kb/SLN15241.html.

yahoo requires me to log in to the e-mail account to get that "app PW". I tried that via Firefox on the same new desktop as the Thunderbird in which I'm trying to add the e-mail account. yahoo rejected the login with no reason given. I used the little eye icon so I could see the password that I entered, and it was correct. I assume that if I entered the password incorrectly in that Firefox browser login, yahoo would ask me to try the login again, not reject me after one try.

Can the Firefox login for the "app password" and the Thunderbird in which I'm trying to add the account be different desktops with different operating systems? or do they have to be the same desktop and operating system? The Thunderbird on my old windows-10 desktop has the yahoo e-mail account working fine (at the moment!).

If you can't log into the web interface to get the app PW, do the 'forgot password' thing.

OS shouldn't matter. Can you get the app PW from Saved Passwords on the Win10 PC and try it on Fedora PC?

1. I see that when I go to the yahoo page that you referenced, when I look at yahoo's instructions, it says: "When creating an app password, use a browser that you've used to sign into Yahoo for several days in a row and avoid using Incognito mode." 2. The yahoo e-mail account works fine in Thunderbird on the old desktop. On the old desktop, using Firefox, I can login to the yahoo e-mail account. But on the new desktop, neither approach works. 3. I've seen many times that yahoo knows which client and operating system I'm using to access my e-mail account. It seems to me that, logically, what's causing the problem is that I'm trying to access my yahoo e-mail from a client-OS combination that I've never used before.

How much of a chance does this have of working: 1. I generate the "app password" on the old desktop. 2. I shut down the old desktop, crawl around on the floor under the desk and table to switch cables around, and power up the new desktop. 3. On the new desktop, I try to create the yahoo e-mail account using the "app password" that was generated on the old desktop. This will take significant time and effort, so I'd like to know it has a good chance of working before I try it. Also, question: does the new "app password" go into the password field in the page I use to create the new account, the password table in settings, or both?

the "forgot password thing": I learned the hard way the there is serious vulnerability in saved passwords and password managers; I seriously avoid those. I'm drowning in passwords that I manually enter. I'd like to avoid changing my password until a last resort.

I do not have an "app password" for the e-mail account on the old desktop.