在WCF服务中访问COM时出错 [英] Error while accessing COM in WCF service

问题描述

你好，

我已经开发了一种WCF服务，其中一种服务方法是使用COM组件，但是当此方法尝试创建COM实例时，它将返回以下错误:

"Creating an instance of the COM component with CLSID {D64DB4A9-3B26-4D2B-B556-9DA433C54175} from the IClassFactory failed due to the following error: 80070005"

我需要设置什么权限以及在哪里?

谢谢

Hello,

I have developed one WCF service and one of the method of service is using COM component but when this method tries to create instance of COM then it returns below error:

"Creating an instance of the COM component with CLSID {D64DB4A9-3B26-4D2B-B556-9DA433C54175} from the IClassFactory failed due to the following error: 80070005"

what permissions I need to set and where?

Thanks

推荐答案

我在Google上找到了它:

您可能需要为IIS中像apppool一样运行的Windows用户设置com组件的启动权限.您可以通过运行dcomcnfg
来做到这一点
还有...

并设置文件权限，以便用户可以读取COM dll文件.

还要检查COM的注册，以查看COM服务器是否支持在MTA线程中被调用.大多数COM服务器都需要STA，它不适合由Web服务创建的MTA线程.

I found this with google:

You may need to set launch permission to the com component for the windows user the apppool is running as in IIS. You can do it by running: dcomcnfg

and...

And set file permissions so the user can read the COM dll file.

Also check the COM''s registration to see if the COM server supports being called in an MTA thread. Most COM servers requires STA which is not suitable for the MTA threads created by web services.

尝试DCOM配置.
http://forums.asp.net/t/1239867.aspx/1 [ ^ ]

Try DCOM config.
http://forums.asp.net/t/1239867.aspx/1[^]

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