Hi Amit, thanks for reaching out!
What version of Internet Explorer are you using? You'll need to make sure it's updated to the latest one, as Sourcetree relies on it for the authentication steps. I'd also advise clearing cache and cookies in the browser to remove any remnants that could be preventing the authorization.
Let us know how it goes,
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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