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after going through all the captcha which the software often gets wrong and won't let me complete an email account, it the gives more excuses that it can't validate a valid email account
[Edited by Moderator]
Who is your eMail Provider & ISP?
They all are about the same problem... Auth2...
Cant create re add Mail
James Walker1 User level:Level 1 (129 points)
Mar 1, 2019 10:39 AM in response to if240
I was having this problem trying to add a mail (not gmail) account just for Notes. In my ~/Library/Keychains folder, I found a subfolder with a long hexadecimal and hyphens name. I deleted that subfolder, logged out, and logged back in. I was then able to add the account, without having lost any passwords from my keychains.
If you get a corrupted message...
Naw, not damaged, it's just that you have an old copy already in Applications, there are 2 cures...
Disconnect from the Internet & set the Date back to 2014, then you can run the Install MacsOS High Sierra App in Applications, so expired Certificates are not expired.
Or... trash the Install MacsOS High Sierra.app in Applications, empty trash & restart, then a new copy of a more recent version can be downloaded…new loc
More info than you need likely...
Mail and Google's OAuth 2.0 policy
Mail and Google's OAuth 2.0 policy - Apple Community
Fix…
https://code2care.org/macos/fix-mail-authorization-error-400-invalid-request/
Mac's Mail App is not as modern as iOS's Mail app, Many eMail providers now require a separate App Password different from your eMail password…
If it's an IMAP account, delete it in Sys Prefs Internet Accounts then use "Other" instead of gMail choice to add it.
Most likely biggest factor is using Other in Mail setup, then using a Browser that doesn’t have gMail PW stored init to get the App PW.
You never did say who was your provider...
Use Other to setup the account.
Solved. In Mac Mail - Go to Add Account and Select "Other". When prompted for email / password - enter your yahoo email address. For password - go to Yahoo Security Page (https://login.yahoo.com/myaccount/security/) and Generate App Key. (Generate and manage app passwords) Use this 16 character code as password.
Cox for Apple Mail…
https://forums.cox.com/discussions/internet/using-yahoo-email-in-mac-os-mail-app/151730
Yahoo cure, thanks to tekkaman65535…
yahoo mail failed to authenticate - Apple Community
yahoo mail failed to authenticate - Apple Community
If the solution doesn’t work for catalina then it won’t help. Even my 3gs allows yahoo mail so why wouldn’t a mac air? There are no options to even set ports which was available on the 3 gs. Seems backward not to allow access to those settings on newer macs.
Catalina won't let me add any email accounts
