Level 1

26 points

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.

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

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?

Nov 24, 2015 5:51 PM in response to ywamer

I was banging my head against the desk here trying to figure this one out... Thanks! For figuring it out, not me banging my head against the desk. Disabled "Mail Shield" under preferences in Avast and it worked!

Dec 30, 2015 5:09 AM in response to oswjim

Wow! That worked for me too, the only way. Awesome, thanks!!!

Syoe

Level 1

4 points

Dec 31, 2015 1:17 AM in response to oswjim

Thank you. This solved my problem too. **** that Avast

ratman54

Level 1

0 points

Dec 31, 2015 2:27 PM in response to Alford7

Thanks! For me it was a faulty one under "My Certificate", I was too focused on the general "certificate" section. Thanks for spurring me into actually solving a problem with my computer on my own!

Jan 15, 2016 10:22 AM in response to jamiefromsawbridgeworth

THX for your post!
Was searching for an answer for 2 days!

Jan 18, 2016 8:00 AM in response to tstab

Yes, removing Avast VPN worked for me. Thank you

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.

Jan 20, 2016 11:11 AM in response to oswjim

Here is how i fixed my issue. I was not getting emails it was saying the same error: http://macreports.com/connection-insecure-mail-app/

Jan 25, 2016 5:54 PM in response to jamiefromsawbridgeworth

Thanks, disabling of Avast security works!! (if you cannot find any keychain issues)

iacarmen

Level 1

0 points

Feb 4, 2016 8:28 PM in response to stephenjt

Thank you very much! This solved my problem. I was able to add my google account to the calendar app and it's synching correctly.

armmangi

Level 1

12 points

Feb 15, 2016 2:28 AM in response to jamiefromsawbridgeworth

Thanks @jamiefromsawbridgeworth. issue sorted.

naddod

Level 1

13 points

Mar 19, 2016 2:23 AM in response to jamiefromsawbridgeworth

tks. In my case this was the solution! 🙂

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! 😟

Mar 22, 2016 4:59 PM in response to gbeltra

Now that worked!🙂

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unable to add yahoo/google mail accounts