使用VS 2015 Update 3克隆远程存储库时遇到错误（TFS 2015 Update 3）

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问题描述

我最近升级到客户端的VS 2015（更新3）和服务器端的TFS 2015（更新3）。 Git操作工作了一段时间，然后在尝试克隆git repo时开始出现以下错误：

 克隆时遇到的错误远程存储库：发送请求时发生错误。 
 
内部异常：
远程服务器返回错误：（401）未经授权。 
 
内部例外：
安全包中没有可用凭证

它显示以下信息：

 请求1：
 GET https：// myhost / tfs / transact / Transact / _git / MY-REPO / info / refs？service = git-upload-pack HTTP / 1.1 
 User-代理：git / 1.0（libgit2）Team Foundation（devenv.exe，14.102.25521.0，Enterprise，SKU：37）
主机：myhost 
接受编码：gzip 
连接：Keep-Alive 
 
响应1：
 HTTP / 1.1 401未授权
 ... 
请求2：
 GET https：// myhost / tfs / transact / Transact / _git / MY-REPO / info / refs？service = git-upload-pack HTTP / 1.1 
 User-Agent：git / 1.0（libgit2）Team Foundation（devenv.exe，14.102.25521.0，Enterprise，SKU： 37）
接受编码：gzip 
授权：NTLM TlRMTVNTUAABAAAAB4IIogAAAAAAAAAAAAAAAAAAAAAKAEM6AAAADw == 
主机：myhost 
 
响应2：
 HTTP / 1.1 401未授权

有了这些信息，我在我的visual studio文件夹中搜索了libgit2 *。*文件。我发现了LibGit2Sharp.dll的几个实例。它们都具有相同的版本（0.22.0.0），但一个实例的版本是14.0.25029.0。我试图在14.0.25029.0之上复制0.22.0.0版本。但视觉工作室在发布期间对此抱怨。在C：\程序文件（x86）\微软Visual Studio 14.0 \ Common7 \ IDE \ Extensions文件夹中找到带有14. *版本的文件夹，它包含几个以Microsoft.TeamFoundation开头的dll。。所有这些dll的版本为：14.102.25521.0（这是我在小提琴跟踪中发现的）。

看起来我处于正确的问题区域，但不确定如何解决错误。

有什么想法？
解决方案
一个星期，我今天发布了这个问题。但在发布之后，我登陆了一个解决方案。

它与visual studio / tfs升级无关。我必须输入错误的tfs证书信息（同时检查记住我框）。记住我的功能，团队资源管理器从来没有给我一个机会来纠正凭据信息，并可能保留使用存储错误的凭据。以下是我必须解决的问题：

控制面板\用户帐户\Credential管理器

删除所有与tfs相关的凭证。

启动visual studio

它现在会提示您输入tfs证书信息。

问题解决了。

下面的文章（尽管是过时的）帮助我解决了这个问题：

I have recently upgraded to VS 2015 (Update 3) on the client side and TFS 2015 (Update 3) on server side. The Git operations worked for a while, then I started getting following error when trying to clone a git repo:
Error encountered while cloning the remote repository: An error occurred while sending the request. Inner Exception: The remote server returned an error: (401) Unauthorized. Inner Exception: No credentials are available in the security package
But I can navigate to repo in the browser without any problems. Then, I figured this may due my client side settings. I tried removing the VS cache as well as TFS cache. Nothing worked. When I used Fiddler, it should following information:
It revealed following information:
Request 1: GET https://myhost/tfs/transact/Transact/_git/MY-REPO/info/refs?service=git-upload-pack HTTP/1.1 User-Agent: git/1.0 (libgit2) Team Foundation (devenv.exe, 14.102.25521.0, Enterprise, SKU:37) Host: myhost Accept-Encoding: gzip Connection: Keep-Alive Response 1: HTTP/1.1 401 Unauthorized ... Request 2: GET https://myhost/tfs/transact/Transact/_git/MY-REPO/info/refs?service=git-upload-pack HTTP/1.1 User-Agent: git/1.0 (libgit2) Team Foundation (devenv.exe, 14.102.25521.0, Enterprise, SKU:37) Accept-Encoding: gzip Authorization: NTLM TlRMTVNTUAABAAAAB4IIogAAAAAAAAAAAAAAAAAAAAAKAEM6AAAADw== Host: myhost Response 2: HTTP/1.1 401 Unauthorized
With this information, I searched for libgit2*.* file in my visual studio folders. I found several instances of LibGit2Sharp.dll. All of them have same version (0.22.0.0) but one instance had the version 14.0.25029.0. I tried copy the version 0.22.0.0 over on top of 14.0.25029.0. But visual studio complained about it during launch. The folder with 14.* version is found in "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions" folder and it contains several dlls that start with "Microsoft.TeamFoundation.". All of those dlls have the version: 14.102.25521.0 (which is what I found in the fiddler trace).
Looks like I am at the right problem area but not sure how to fix the error.
Any ideas?
解决方案
After struggling with the above problem for a week, I posted the question today. But right after posting, I landed on a solution.
It has nothing to do with visual studio/tfs upgrade. I must have entered wrong tfs credential information (while checking remember me box). With remember me feature, the team explorer never gave me a chance to correct the credential information and probably kept using stored wrong credentials. Here is what I had to do to correct the issue:
Control Panel\User Accounts\Credential Manager
Remove any tfs related credentials.
Launch visual studio
It will now prompt you for tfs credential information.
Problem solved.
The following post (though dated) helped me in solving the problem:https://blogs.msdn.microsoft.com/visualstudioalm/2012/08/29/clearing-the-credentials-for-connecting-to-a-team-foundation-server/

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