I have new PC and I have problem with cloning of the repository in sourcetree.
In my previous PC it was working.
I can login into stash repository but I can't clone the repository in the source tree
Problem is with authorization - see attachments
From the icons it looks like you are using an older version of Sourcetree, 1.x? That potentially means you are using an old version of Git and its bundled Git Credential Manager, GCM.
Bitbucket, and GitHub, turned off support for older versions, 1.0 and 1.1, of TLS last year. Newer versions of the GCM support TLS 1.2. You will need to at a minimum upgrade the Git for Windows install you are using to 2.20.1 and/or update Sourcetree to 3.0.17+ and update the embedded Git in the Tools/Options/Git tab.
Supported Platforms macOS Windows We recently introduced support for additional hosting services such as GitHub Enterprise, GitLab (Cloud, Community Edition, Enterprise Edition), and...
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