通过注册表设置：HKLMSOFTWAREMicrosoftSymbol Server ProxyWeb Directoriessymbols下，设置SymbolPath，类型为REG_EXPAND_SZ。可以通过命令行直接添加：
reg add "HKLMSOFTWAREMicrosoftSymbol Server ProxyWeb
Directoriessymbols" /v SymbolPath /t REG_EXPAND_SZ /f /d
c:windowssymbols;SRV*d:symbols*http://msdl.microsoft.com/download/symbols