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We have just upgraded our SAP server to support TLS 1.1. Now, I need to find out using which protocol version my callouts are going to SAP.

I have checked debug log but did not any such information. Please suggest. Thanks

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3 Answers 3

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According to this Knowledgebase article, TLS 1.2 was supported for Apex callouts as of summer 2015.

Apex callouts, Workflow outbound messaging, Delegated Authentication, and other HTTPS callouts now support TLS (Transport Layer Security) 1.1, TLS 1.2 ...

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You can view Login History from Setup->Manage Users-> Login History how users are accessing Salesforce and which TLS protocol they are using.

Login History

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    This question is specifically asking about outgoing http requests from SFDC. This list is for requests to SFDC Commented Apr 30, 2020 at 19:13
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Based on the TLS 1.1 Disablement docs https://help.salesforce.com/articleView?id=000321556&type=1&mode=1

TLS 1.1 is disabled for both inbound and outbound requests. ANY https connection to salesforce will require TLS 1.2 as of late 2019.

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