I am working on upgrading my site to 1.9.3.1. I have a development site that is on 1.9.3 and I can not install through Magento Connect. However on my production site that is 1.9.2.2 and the installation from Magento Connect works fine.
In research old versions of Curl came up as a possible culprit so I contacted hosting and they upgraded me to the most recent version of curl. Didn't solve the issue.
The next culprit was php. I currently use 5.4, so I upgraded the dev server to 5.5 and had the same issue.
This is the error I get-
- community/BalkeTechnologies_StoreMaintenance: Unknown SSL protocol error in connection to connect20.magentocommerce.com:443