"Your iCloud account settings are out-of-date" notification keeps popping up on my Windows 10 PC.

I am not using the two-factor authentication. I get the settings are out-of-date error message when opening the calendar app on my surface book. When I click 'fix' I enter my Apple ID and PW and the error message pops up again and is never fixed. HELP PLEASE!

AGAIN: The two-factor authentication method did NOT resolve this for me. I have already gone through these steps multiple times. It is NOT HELPFUL to repeatedly suggest the same resolution over and over again when people clearly state that performing these steps has not helped or resolved the problem.

I did the two stage authentication and generated a new password and all worked well until suddenly it popped up again and couldn't get my mail (I hadn't change my Apple password which I know means you need to regenerate). Revoked all app specific passwords and generated a new one.. which worked for half an hour this morning allowed me to download my mail and then the notification popped up yet again and can't get my mail. Using Windows 10 mail ... any ideas?

okay, just go to http://appleid.apple.com and log in. There, under the 'Security' section, you will find App-Specific Passwords. Click on 'Generate Password...' and name the app you're going to use. I'd suggest Windows 10. Then you get a set of random letters. Go to your Windows accounts and click on 'Fix account' and enter this newly generated password as your iCloud password. I had no idea that this was a thing until just now.

Great explanation! None of that made sense until I read yours. The 16 digit unknown password was driving me crazy until I saw the App specifc password was 16 characters long. I dont know why there is more notice or instructions from Apple on this. Thanks again

Yes, me too. I followed the directions to create the two-factor password, but it soon comes with the same "out of date" warning. I guess no one has figured this out yet. However, I just sent an email to a friend and it still works even with the error.

I don't understand the app specific password stuff. I'm afraid to mess with my apple account and the two factor password authentication makes no sense.

I am not using two-factor authentication for my iCloud account. Do you have another suggestion for this message? Your iCloud account settings are out-of-date

I've tried to do this 100 times, but I can't see 'Generate Password' anywhere. Is there something I am missing?

Are you using two-factor authentication for your iCloud account? if so, the only solution I could find that worked was to generate an App-specific password through the AppleID website (https://appleid.apple.com) and use it as the password for my Windows Mail/Calendar iCloud account.

The procedure is described in an answer by G00dbyeGirl to this Microsoft community post.

This worked, thanks. I created an app-specific password for my Surface Pro 4 / Win 10 and all is well.

Thanks This Fixed it for me

Generating an app specific password worked for me as well. Thank you!

"Your iCloud account settings are out-of-date" notification keeps popping up on my Windows 10 PC.

Okay, I have the same problem but don't understand what an "app-specific password" is ---- how would this differ from my Apple ID password ..... and why would I need a "separate" password for my Windows Mail/Calendar iCloud account ... why can't I continue to use my existing Apple ID and password for this account????