cPanel and Outlook Phone App Results in Unable to Log In - Secure Connection Unavailable

It appears the free Outlook app for iOS and Android phone does not support newer SNI based certificates at this time such as Let's Encrypt. If you are receiving the error message "Unable to login, Secure connection unavailable. Would you like to login anyway?" you have verified DNS is setup properly, along with login credentials and can connect fine with other mail apps like Thunderbird, this may be the case. It then comes down to and you do not require https:// for the website with Let's Encrypt, can use a purchased certificate, or you can switch autossl to Comodo. If this is the case, and you have admin rights, you can jump into your web host manager, select Manage SSL Hosts, scroll to the domain and make sure "Let's Encrypt" is not assigned to the host. If it is, delete it. It will default back to the server's default SSL. You may also switch the SSL to Comodo/cPanel, Inc certificate and it should work properly. If you do not have these rights contact us and we will be happy to help!

  • 113 Users Found This Useful

Was this answer helpful?

Related Articles

Outlook: The connection to the server has failed - Error: 10061

Outlook: The connection to the server has failed. Account: 'yourdomain.com', Server:...

503 valid RCPT command must precede DATA

When attempting to send email you receive the following message in your mail client software:...

What is the path to sendmail?

We are currently running a custom version of sendmail. /usr/sbin/sendmail

550 Access denied - Invalid HELO name

The error message "550 Access denied - Invalid HELO name" means that the server you are trying to...

How do I block emails containing zip attachments

For blocking .zip attachments you will want to use the "Account Level Filtering" area of your...