Sourcetree's registration depends on a WPF Web Control that in turn relies on Internet Explorer and it's settings.
If you can log directly into https://id.atlassian.com via Internet Explorer then registration in Sourcetree should work.
If you have any issues logging in via Internet Explorer our best advice as of today for registration webview issues with IE is as follows::
A vulnerability has been published today in regards to Sourcetree for Windows. The goal of this article is to give you a summary of information we have gathered from Atlassian Community as a st...
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