Looks like you've run into this bug SRCTREEWIN-9250. Our developers are currently working on it, in the meantime you can use Basic authentication as a workaround.
You can also leave your comments or questions in the bug ticket or watch it to receive future updates.
Hope that helps!
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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