Vs2013 webform references researched and components for text to speech function, after the program to write, everything is normal, debugging process is deployed to the iish after execution of a web page calls the speak (), system.runtime.interopservices.COM web page error Exception Exception from HRESULT: 0 x8004503a, I baidu a number of ways, try the following steps: 1, iis website corresponding application pool identity by ApplicationPoolIdentity modification for the LocalSystem (page execution remains at 8004503 a). 2, the program web. Config increase & lt; Identity impersonate="true" userName="xx" password="xx"/& gt; (page execution remains at 8004503 a); Is really can't find the way, please master guiding, (normal debugging process, pronunciation) thank you,

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COMException,
COM components abnormal!
This is COM interopservices
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