通过注册表设置：HKLM\SOFTWARE\Microsoft\Symbol Server Proxy\Web Directories\symbols下，设置SymbolPath，类型为REG_EXPAND_SZ。可以通过命令行直接添加：
reg add "HKLM\SOFTWARE\Microsoft\Symbol Server Proxy\Web Directories\symbols" /v SymbolPath /t REG_EXPAND_SZ /f /d c:\windows\symbols;SRV*d:\symbols*http://msdl.microsoft.com/download/symbols