title: Cannot clone Git repository into sourcetree, Login screen keeps appearing
body: <p>In BitBucket, when I select clone into source tree, the URL is of format</p>
  
  <p>Sourcetree opens with details to clone, but keeps asking for my login details no matter how many times I enter them.</p>
  
  <pre><code>https://myname@bitbucket.org/mygroup/myrepository.git
  </code></pre>
  
  <p>I have no problems on a different computer ( also Windows 10 )</p>
  
  <p>I have tried upgrading SourceTree  and Reinstalling Source Tree</p>
  
  <p>I have tried System Git and Embedded Git and reinstalling both Git</p>
  
  <p>I can clone Mercurial repositories</p>
  
  <p>At the Dos prompt I can type</p>
  
  <pre><code>git clone https://myname@bitbucket.org/mygroup/myrepository.git
  </code></pre>
  
  <p>I get a message </p>
  
  <pre><code>fatal: HttpRequestException encountered
  An error occurred wihe sending the request
  </code></pre>
  
  <p>then it asks for my password
  then it proceeds with the clone</p>
  
  <p>However in sourcetree the repository shows that there are more branches to pull.
  I am unable to pull these branches</p>
  
  <p>When I go to the Tools->Options->Authentication tab I can see myname@bitbucket.org as an Account.</p>
  
  <p>If I try to add myname@mydomain.com.au I get</p>
  
  <p>Authentication failed
  Invalid URL: The hostname could not be parsed.</p>