SourceTree installation Windows - Unable To Extract / Download Failed

Hi, I am trying to install SourceTree, and only end up getting errors. Running the SourceTreeSetup- at first \PortableGCMSt.7z fails to load with a port 443 timeout, then after the Install splash screen once you sign up & so forth in the Install Tools gets stuck and   "Git Credential Manager", "Git" and so forth downloads fail again with port 443 timeouts. Is the down or is the matter with my SSH? 

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

NOTE: this is Amazon's IP, so it is quite possible to have been blocked as a spam IP, in that case, is there an alternate source to get a full package?


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Accepted answer

Well, answering myself: "known bug"

If you are behind a proxy, SourceTree fails to make the downloads from

An alternative workaround is to stick with the install until this gets fixed:

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