Update vs2013 update 4 and TFS can't work!

Question

like this:
and the ActivityLog.xml show :
<entry><record>1581</record> <time>2015/02/16 08:36:44.371</time> <type>Information</type> <source></source>VisualStudio <description>Entering function CVsPackageInfo::HrInstantiatePackage</description>
<guid>{E8B06F41-6D01-11D2-AA7D-00C04F990343}</guid> </entry> <entry><record>1582</record> <time>2015/02/16 08:36:44.371</time> <type>Warning</type> <source></source>VisualStudio <description>Unexpected
system error mode before loading package [Visual Studio Web Browser Package]</description> <guid>{E8B06F41-6D01-11D2-AA7D-00C04F990343}</guid> </entry> <entry><record>1583</record> <time>2015/02/16 08:36:44.371</time>
<type>Information</type> <source></source>VisualStudio <description>Begin package load [Visual Studio Web Browser Package]</description> <guid>{E8B06F41-6D01-11D2-AA7D-00C04F990343}</guid> </entry> <entry><record>1584</record>
<time>2015/02/16 08:36:44.371</time> <type>Information</type> <source></source>VisualStudio <description>Loading UI library</description> <guid>{E8B06F41-6D01-11D2-AA7D-00C04F990343}</guid> <path>C:\Program
Files (x86)\Microsoft Visual Studio 12.0\\Common7\IDE*\msenvui.dll</path> </entry> <entry><record>1585</record> <time>2015/02/16 08:36:44.372</time> <type>Information</type> <source></source>VisualStudio
<description>End package load [Visual Studio Web Browser Package]</description> <guid>{E8B06F41-6D01-11D2-AA7D-00C04F990343}</guid> </entry> <entry><record>1586</record> <time>2015/02/16 08:38:50.769</time>
<type>Information</type> <source></source>VisualStudio <description>Entering function CVsPackageInfo::HrInstantiatePackage</description> <guid>{B80B010D-188C-4B19-B483-6C20D52071AE}</guid> </entry> <entry><record>1587</record>
<time>2015/02/16 08:38:50.770</time> <type>Information</type> <source></source>VisualStudio <description>Begin package load [Microsoft.VisualStudio.TeamFoundation.TeamFoundationHost, Microsoft.VisualStudio.TeamFoundation,
Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]</description> <guid>{B80B010D-188C-4B19-B483-6C20D52071AE}</guid> </entry> <entry><record>1588</record> <time>2015/02/16 08:38:50.771</time>
<type>Error</type> <source></source>VisualStudio <description>CreateInstance failed for package [Microsoft.VisualStudio.TeamFoundation.TeamFoundationHost, Microsoft.VisualStudio.TeamFoundation, Version=12.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a]</description> <guid>{B80B010D-188C-4B19-B483-6C20D52071AE}</guid> </entry>
80070002 <errorinfo>未能加载文件或程序集“Microsoft.TeamFoundation.Client, Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a”或它的某一个依赖项。系统找不到指定的文件。</errorinfo> <entry><record>1589</record> <time>2015/02/16 08:38:50.771</time>
<type>Error</type> <source></source>VisualStudio <description>End package load [Microsoft.VisualStudio.TeamFoundation.TeamFoundationHost, Microsoft.VisualStudio.TeamFoundation, Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]</description>
<guid>{B80B010D-188C-4B19-B483-6C20D52071AE}</guid>
80004005 - E_FAIL <errorinfo>未能加载文件或程序集“Microsoft.TeamFoundation.Client, Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a”或它的某一个依赖项。系统找不到指定的文件。</errorinfo> </entry>
i try clean this C:\Users\Administrator\AppData\Roaming\Microsoft\VisualStudio\12.0 file

Answer 1

Hi Richard,  
Thanks for your post.
Please refer to the reply in your another post:
https://social.microsoft.com/Forums/zh-CN/f47c847a-9b23-445e-9e82-1e73cbc7826d/vs2013-update-4-rtm-tfs?forum=vstszhchs.
If other VS 2013 working fine on other clients and this issue only happened on your clinet, please Repair your VS 2013 Update 4, then try works with TFS Server again. 
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