背景：
前段时间写了一个exe程序，一直以来运行在xp，server 2003上面，都运行良好。最近需要把它重新部署到一台新的server上面，是Windows server 2008 R2 Standard版，不想却一直不能正常运行。
症状：
当双击运行程序时，弹出错误窗口，如下：
打开 Event Viewer，错误信息如下：
Activation context generation failed for "C:/xxx/xxxxx/xxx.exe". Dependent Assembly Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8" could not be found. Please use sxstrace.exe for detailed diagnosis.
继续，用sxstrace.exe 来跟踪错误：
1. 开始运行
C:/Windows/system32>sxstrace.exe trace -logfile:c:/mytrace.etl Tracing started. Trace will be saved to file c:/mytrace.etl. Press Enter to stop tracing...
2. 双击应用程序，重现错误
3. 关闭上面运行的sxstrace.exe
4. 导出错误信息
C:/Windows/system32>sxstrace.exe parse -logfile:c:/mytrace.etl -outfile:c:/mytrace.txt Parsing log file c:/mytrace.etl... Parsing finished! Output saved to file c:/mytrace.txt.
错误信息如下：
================= Begin Activation Context Generation. Input Parameter: Flags = 0 ProcessorArchitecture = Wow32 CultureFallBacks = en-US;en ManifestPath = C:/xxx/xxxxx/xxx.exe AssemblyDirectory = C:/xxx/xxxxx/ Application Config File = ----------------- INFO: Parsing Manifest File C:/xxx/xxxxx/xxx.exe. INFO: Manifest Definition Identity is (null). INFO: Reference: Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8" INFO: Reference: Microsoft.VC90.MFC,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8" INFO: Resolving reference Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8". INFO: Resolving reference for ProcessorArchitecture WOW64. INFO: Resolving reference for culture Neutral. INFO: Applying Binding Policy. INFO: No publisher policy found. INFO: No binding policy redirect found. INFO: Begin assembly probing. INFO: Did not find the assembly in WinSxS. INFO: Attempt to probe manifest at C:/Windows/assembly/GAC_32/Microsoft.VC90.CRT/9.0.21022.8__1fc8b3b9a1e18e3b/Microsoft.VC90.CRT.DLL. INFO: Did not find manifest for culture Neutral. INFO: End assembly probing. INFO: Resolving reference for ProcessorArchitecture x86. INFO: Resolving reference for culture Neutral. INFO: Applying Binding Policy. INFO: No publisher policy found. INFO: No binding policy redirect found. INFO: Begin assembly probing. INFO: Did not find the assembly in WinSxS. INFO: Attempt to probe manifest at C:/Windows/assembly/GAC_32/Microsoft.VC90.CRT/9.0.21022.8__1fc8b3b9a1e18e3b/Microsoft.VC90.CRT.DLL. INFO: Attempt to probe manifest at C:/carryquote/ServiceSHFE/Microsoft.VC90.CRT.DLL. INFO: Attempt to probe manifest at C:/carryquote/ServiceSHFE/Microsoft.VC90.CRT.MANIFEST. INFO: Attempt to probe manifest at C:/carryquote/ServiceSHFE/Microsoft.VC90.CRT/Microsoft.VC90.CRT.DLL. INFO: Attempt to probe manifest at C:/carryquote/ServiceSHFE/Microsoft.VC90.CRT/Microsoft.VC90.CRT.MANIFEST. INFO: Did not find manifest for culture Neutral. INFO: End assembly probing. ERROR: Cannot resolve reference Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8". ERROR: Activation Context generation failed. End Activation Context Generation.
解决：
首先，C:/Windows/winsxs/Manifests 文件夹下面只有 x86_microsoft.vc90.mfc_1fc8b3b9a1e18e3b_9.0.30729.1_none_dcc7eae99ad0d9cf 的 manifest 和 cat文件，但是没有找到 x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.21022.8_none_bcb86ed6ac711f91 的 cat 和 manifest 文件。
所以可能是由于服务器中并没有安装关于 vs2008 的相关组件，所以产生上述错误。
从microsoft 官网下载 vcredist 程序， 安装之后，一切OK。
http://www.microsoft.com/downloads/en/details.aspx?familyid=9B2DA534-3E03-4391-8A4D-074B9F2BC1BF&displaylang=en
