While installing SourceTree on my Windows 10 PC, I entered my Atlassian credentials which is tied to our corporate Jira account, but the install rejected that login.  I can logon and access our Jira site https://yrcfreight.atlassian.net/secure/Dashboard.jspa without any problem, but when I use the same credentials during the install, it fails.  I had to use my personal Google+ account to get past the identity step during installation.