Unable to connect Bitbucket account in SourceTree

[reginna21]

I want to add a Bitbucket Cloud account in SourceTree. And always show error: 

Failed to check login for user [Username]
Unable to connect to the host service
An error occurred while sending the request.
The request was aborted: Could not create SSL/TLS secure channel.

I found the same question and want to enable TLS 1.1 and TLS 1.2, but my SourceTree version can't find the checkbox.

 How can I solve this problem?

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System: Windows 7
SourceTree Version: 3.3.8
Git Version: 2.25.1.windows.1

[PrezesE]

I have found one possible solution.
You have to enable TLS 1.2 in windows registry.
Here is a video with step by step solution
https://www.youtube.com/watch?v=LK7-YNpxEhA
it worked for me

[uniday]

helped me a lot! thanks

[samdizon]

Your suggestion worked! Thank you

[Gabriel Alejandro Devoto]

Great! Worked for me!

[reginna21]

Thank you! Worked for me!

[IsaacBianco]

I have the same problem.

[PrezesE]

Same problem here, couldnt find any solution