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unable to add yahoo/google mail accounts

since upgrading to El Capitan I'm unable to add any yahoo or google account ...


when trying to add an account (gmail or yahoo) into mail an error message pops up stating:


Connection Insecure

Failed to verify the server certificate. This could be because of your network configuration or your proxy settings.


User uploaded file


when trying to access the accounts via web browser all goes ok, so there’s no network/internet connection or proxy issues. In fact, I'm using no proxy whatsoever.


The error is the same if trying to add the accounts using mail or the internet accounts system preference ... I imagine is something related to OAuth since for any of these two providers that is the authentication method used to configure them


any help would be greatly appreciated


Rgds

MacBook (13-inch Aluminum Late 2008), OS X El Capitan (10.11)

Posted on Sep 30, 2015 2:48 PM

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Posted on Jan 18, 2017 4:50 AM

Been battling with this for quite some time. Removing all certificates didi not help, neither did removing the entire keychain.


It was AdGuard, even though it wasn't showing as a blocked page or anything - disabling AdGuard allowed me to add the account and it still works after re enabling.

73 replies

Nov 20, 2015 1:57 PM in response to oswjim

I've looked through the thread and tried all the proposed solutions but I am still having problems adding internet accounts to my Macbook Pro. I've deleted the hotmail and google accounts that had been synced to my Mail prior to the OS X El Capital upgrade because I kept getting a prompt that says Internet Accounts settings can't verify my username or account. I thought re-adding them might help but it hasn't - the same problem exits. I've checked all the certificates and they're all valid. Any other suggestions?

Jan 19, 2016 9:09 PM in response to oswjim

The following answer solved this problem for me:


link


Even though the certificate ("VeriSign Class 3 Public Primary Certification Authority - G5") was not marked as invalid in the list in Keychain Access, clicking directly on it showed it listed as "issued by an unknown certificate authority". Deleting it allowed me to get past the warning dialog.

Mar 22, 2016 4:52 PM in response to oswjim

I have this same issue. Fresh install of El Capitan, once I get to the email accounts I get the same error messages for only Yahoo and Google.

Once you selected the email account name it freezes and provide the error message "Failed to verify the server certificate. This could be because of your network configuration or your proxy settings." And my certificates are all green! 😟

unable to add yahoo/google mail accounts

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