sourceTree 安装之后需要使用账号登陆以授权，安装成功后先不要打开，可以先执行下面两步之后，再打开。
1.安装之后，转到用户本地文件夹下的 SourceTree 目录，没有则可以新建：C:\Users\用户\AppData\Local\Atlassian\SourceTree （或者 %LocalAppData%\Atlassian\SourceTree\）用户是指自己的本机用户
2.在文件夹内新建accounts.json文件里面输入，保存后退出，内容如下：
[
{
"$id": "1",
"$type": "SourceTree.Api.Host.Identity.Model.IdentityAccount, SourceTree.Api.Host.Identity",
"Authenticate": true,
"HostInstance": {
"$id": "2",
"$type": "SourceTree.Host.Atlassianaccount.AtlassianAccountInstance, SourceTree.Host.AtlassianAccount",
"Host": {
"$id": "3",
"$type": "SourceTree.Host.Atlassianaccount.AtlassianAccountHost, SourceTree.Host.AtlassianAccount",
"Id": "atlassian account"
},
"BaseUrl": "https://id.atlassian.com/"
},
"Credentials": {
"$id": "4",
"$type": "SourceTree.Model.BasicAuthCredentials, SourceTree.Api.Account",
"Username": "",
"Email": null
},
"IsDefault": false
}
]
3、打开sourceTree，即可授权成功