I understand there is a deadline to support TLS1.2 when making calls to PayPal Express from my ASP.Net app, however, I keep getting the following error: "Could not create SSL/TLS secure channel" whenever I attempt to make a call to the sandbox (now that the sandbox no longer supports anything less than version 1.2 of TLS). The site is version 4.6.1 of DotNet (which fully supports TLS1.2) and my test client supports TLS1.2 as well as all the browsers and software on the machine (both Win 2012 Server and Win 8.1 Desktop), so I am 100% positive that the problem lies in the paypal_base.dll file. I notice that the paypal_base.dll file is no longer anywhere to be found. The version I have is old (Version 4.1.0.0), but I found a newer version (Version 5.6.92) and still have the identical problem - neither supports TLS 1.2. Is there any way that there is another version of paypal_base.dll that supports TLS1.2 ? I've scoured the Internet looking for this file, to no avail. I've spent days trying to get this to work, but no joy - it SHOULD work, but I believe the dll is the problem. Is this deprecated? If so, why is there no mention of this anywhere? Do I just need to completely re-write the payment system to the new format? At wit's end (and running out of time!) HELP!
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