As Adobe has deprecated support for TLS 1.0 and TLS 1.1, all enterprise Admins and end users should enable TLS 1.2 on Windows 7 devices. 

Update Windows 7 Service Pack 1 from Windows Update using the following steps. 

  •  Select Start , type "update" in the search box. Then select Windows Update in the search results.

  •  In the details pane, select Check for updates, and then wait while Windows looks for the latest updates for  your computer.

  •  If you see a prompt telling you that important or optional updates are available, or telling you to review  important or optional updates, select the message to view the updates to install.

  •  In the list, select the check box for the updates that you want to install, select OK, and then select Install updates.