開發人員提交一個dump文件（Windows Server 2008 R2），當前調試環境Windows Server 2012，加載sos.dl執行~* e !clrstack，提示如下錯誤：
Failed to load data access DLL, 0x80004005 Verify that 1) you have a recent build of the debugger (6.2.14 or newer) 2) the file mscordacwks.dll that matches your version of clr.dll is in the version directory or on the symbol path 3) or, if you are debugging a dump file, verify that the file mscordacwks_<arch>_<arch>_<version>.dll is on your symbol path. 4) you are debugging on supported cross platform architecture as the dump file. For example, an ARM dump file must be debugged on an X86 or an ARM machine; an AMD64 dump file must be debugged on an AMD64 machine. You can also run the debugger command .cordll to control the debugger's load of mscordacwks.dll. .cordll -ve -u -l will do a verbose reload. If that succeeds, the SOS command should work on retry. If you are debugging a minidump, you need to make sure that your executable path is pointing to clr.dll as well.
當前系統mscordacwks.dll版本和dump來源系統版本不同，將來源系統對應版本的mscordacwks.dll復制到對應的搜索目錄（Symbol File Path、Source File Path和Image File Path都可以），並重新加載。這個時候你會發現在Symbol File Path已經下載了對應的mscordacwks.dll運行時版本，比如：mscordacwks_AMD64_AMD64_4.0.30319.01.dll\4BA21EEB965000\mscordacwks_AMD64_AMD64_4.0.30319.01.dll。
繼續執行~* e !clrstack，WinDbg提示如下錯誤：
The version of SOS does not match the version of CLR you are debugging. Please load the matching version of SOS for the version of CLR you are debugging. CLR Version: 4.0.30319.1 SOS Version: 4.0.30319.17929 Failed to load data access DLL, 0x80004005 Verify that 1) you have a recent build of the debugger (6.2.14 or newer) 2) the file mscordacwks.dll that matches your version of clr.dll is in the version directory or on the symbol path 3) or, if you are debugging a dump file, verify that the file mscordacwks_<arch>_<arch>_<version>.dll is on your symbol path. 4) you are debugging on supported cross platform architecture as the dump file. For example, an ARM dump file must be debugged on an X86 or an ARM machine; an AMD64 dump file must be debugged on an AMD64 machine. You can also run the debugger command .cordll to control the debugger's load of mscordacwks.dll. .cordll -ve -u -l will do a verbose reload. If that succeeds, the SOS command should work on retry. If you are debugging a minidump, you need to make sure that your executable path is pointing to clr.dll as well.
調試機器和來源機器SOS.dll、clr.dll版本不一致，將來源機器的兩個文件復制到一個指定目錄。用.load命令加載這個版本的sos，再次執行~* e !clrstack，運行成功。之后執行sos的任何命令WinDbg都會提示如下信息（暫時忽略它）：
The version of SOS does not match the version of CLR you are debugging. Please load the matching version of SOS for the version of CLR you are debugging. CLR Version: 4.0.30319.1 SOS Version: 4.0.30319.17929