But this doesn't really test the DLL, and might really only apply as a test for RESTful API implementations imo. When we tested the server by opening the test url ( ) on the server in a browser, we got back PayPal_Connection_OK. We would like to keep TLS 1.0 on the server for a little while longer as some of our client's have not been able to upgrade their services past 1.0.this can be worked around but we'd like to know if this DLL will automatically negotiate at the highest supported TLS version (1.2). If you are using SSL 3.0, you have to replace it. Currently, PayPal Sandbox already disables the SSL 3.0, so you can test your application in PayPal Sandbox environment. Instead of SSL 3.0 protocol, we can use new protocol Transport Layer Security (TLS).

Our Windows Server currently supports TLS 1.0, 1.1, 1.2. After PayPal disable SSL 3.0 protocol, all old integrations will be affected. I did recently find an upgraded DLL (version 4.4 dated 2010) but it looks like everything has been deprecated since in favor of RESTful API-reliant environments. However, our timeframe probably will extend past June so we need to verify whether our current DLL will operate properly with Paypal post-May.

I'd brought up in a previous forum whether there was a RESTful API roadmap for this situation and recently a moderator introduced us to 'PayPal for Marketplaces' so we're looking into that as a upgrade from what we're doing now. We have a special situation where we are accepting payments to be transmitted directly to our client's Paypal accounts instead of to our own. Make sure you are running OpenSSL/1.0.1 or higher, NSS/3.15.1 or higher, or the latest version of other cryptographic libraries.We're using this DLL (Payflow_dotNET.dll) for processing payments in. You may still want to consider the actions below to secure your site as much as possible.

Your site should work fine when making calls to gateways and APIs that require TLS 1.2. I then installed TLS 1.2 Compatibility Test plugin for wordpress and it get I used the 2 checker below and they both said my website ( ) was using TLS 1.2 I got an email from paypal saying that i need to upgrade to TLS 1.2

Paypal sandbox test tls 1.2