Magento: Unknown cipher in list: TLSv1



Magento: Unknown cipher in list: TLSv1

If you are getting the error “Unknown cipher in list: TLSv1” while installing Magento or updating it, chances are it’s because you are hosting on a Centos box and well, Centos is always a pain. To fix it:

Edit downloader/lib/Mage/HTTP/Client/Curl.php, and:


$this->curlOption(CURLOPT_SSL_CIPHER_LIST, 'TLSv1');



3 thoughts on - Magento: Unknown cipher in list: TLSv1

  • Parwez
    Dec 12, 2015 at 10:01 am

    Extremely good.

    It solved my problems many times.

  • matt
    Jun 29, 2016 at 5:10 am

    where can i find downloader/lib/Mage/HTTP/Client/Curl.php, i dont know where/how to locate this to update. thanks

    • dwdonline
      Jul 6, 2016 at 11:08 pm

      You have to FTP into your site. Ask you host. They can give you the login info. Once you have logged on with FTP, you go to your home folder. Usually, it’s something like /var/www/, /var/www/html, or /public_html. Then you will find the downloader folder in that folder.

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