DCOM 80070005 Error On Windows 7

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I have built and registered a DCOM App,then I could find my DCOMApp in "DCOM Config" of "DCOMCNFG.exe".

Here is the problem:
I deploy my DCOMApp on WindowsXP(with out config anything just register DCOM),and test client visit from Windows7 on another computer.In this situation, my DCOMApp works fine on WindowsXP.

But I deploy my DCOMApp on Windows7(Ultimate 7600), and test client visit from WindowsXP, I always get a HRESULT=0x80070005 error after calling CoCreateInstanceEx.

I use excactly the same Test Client and DCOM Server Exe, just switch there deploying position.

I have tried some tips from google, such as:
http://www.computerperformance.co.uk/Logon/code/code_80070005.htm
http://www.opcactivex.com/Support/Tutorials/DCOM_Tutorial_-_Configuring_th/dcom_tutorial_-_configuring_th.html

But the problem is still there.

What shuold I do to fix this ?

PS: My Test Client CoCreateInstanceEx call:

CoInitialize(NULL);
	HRESULT hr=S_OK;
	MULTI_QI mqi[]={{&IID_ITestGetOsVersionV2,NULL,0}};//Only One Interface
	COSERVERINFO SrvInfo={0};//other member can be NULL/Zero
	SrvInfo.pwszName=L"192.168.0.1";	
	hr=CoCreateInstanceEx(CLSID_TestGetOsVersionV2,NULL,CLSCTX_ALL,&SrvInfo,
		sizeof(mqi)/sizeof(mqi[0]),mqi);//here,always 0x80070005.......
	if (SUCCEEDED(hr)){.....................}

Posted 8-Jun-11 20:29pm

GhostEx

Updated 8-Jun-11 21:24pm

barneyman

v2

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barneyman · Answer 1 · 2011-06-08T21:39:00

The only extra step I've had to employ when installing our DCOM server on a win7 machine is to tell the firewall to let the exe out, but that said, our DCOM server also becomes a callback client to the originating caller

0x80070005is invariably a problem with the configuration of your APPID

Make sure that your clsid references your appid, and in dcomcnfg make sure the GUID quoted in your app is your appid (dcomcnfg has a wonderful ?feature? where it invents an appid for your object if one wasn't specified - very confusing)

Then it's a case of setting security options for your app; you must also make sure the default machine limit allows those options

i.e. if you add StanSmith to remotely activate your app, that account must also exist in the Limit's for remote Activation

GhostEx · Answer 2 · 2011-06-08T22:43:00

Dear barneyman, thanks for your reply.

Does "your clsid references your appid" mean like this?
MYDOMAPP.rgs file:
HKCR
{
NoRemove AppID
{
{7AA28EDE-49D0-4DC1-95AD-3E697CBBED90} = s 'TestGetOSVerV2'
'TestGetOSVerV2.EXE'
{
val AppID = s {7AA28EDE-49D0-4DC1-95AD-3E697CBBED90}
}
}
}
CLSID rgs file:
HKCR
{
TestGetOSVerV2.TestGetOsVersionV2.1 = s 'TestGetOsVersionV2 Class'
{
CLSID = s '{A4823774-CDC7-4161-8C76-BA93344402E5}'
}
TestGetOSVerV2.TestGetOsVersionV2 = s 'TestGetOsVersionV2 Class'
{
CLSID = s '{A4823774-CDC7-4161-8C76-BA93344402E5}'
CurVer = s 'TestGetOSVerV2.TestGetOsVersionV2.1'
}
NoRemove CLSID
{
ForceRemove {A4823774-CDC7-4161-8C76-BA93344402E5} = s 'TestGetOsVersionV2 Class'
{
ProgID = s 'TestGetOSVerV2.TestGetOsVersionV2.1'
VersionIndependentProgID = s 'TestGetOSVerV2.TestGetOsVersionV2'
ForceRemove 'Programmable'
LocalServer32 = s '%MODULE%'
val AppID = s '{7AA28EDE-49D0-4DC1-95AD-3E697CBBED90}' //appid should be refered here ???
'TypeLib' = s '{F7B530C2-403A-4072-9835-B18803D3B165}'
}
}
}

DCOM 80070005 Error On Windows 7

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