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"The authentication service is unknown" on some Win98 machines when using DCOM

Posted on 2003-11-13
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Last Modified: 2012-06-27
I am having headache with two Win98 machines. I am working in a domain. I have a ActiveX EXE program installed on a server (Win2k), and a client ActiveX EXE installed on client PCs. The client EXE will send a query to the server EXE, and the EXE will extract the data from Access database and send it back to the client. Some Win98 machines are working fine. I was not sure what modification had been made previously to make the client EXE working. For two of them, I receive the following message:

-2147023149 (800706d3)
The authentication service is unknown.

Using DCOMCNFG, I already set "Authentication Level" of the server's EXE to "None" and the problem still exist. One of the machines even have been reformatted and the problem remains.

I tried to install DCOMCNFG on the Win98 machine but it seems that I have nothing to modify.. most of them are greyed out.

Do I need to modify the registry? If yes, how?

Any help will be grateful. Thanks and hope to hear from you ASAP.
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Question by:cwchan80
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by:EDDYKT
ID: 9739074
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by:cwchan80
ID: 9742918
Hi EDDYYKT, I found this post before but at the end the problem they faced remained unsolved.
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Accepted Solution

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cwchan80 earned 0 total points
ID: 9744186
I finally found the solution. Using DCOMCNFG, I set "Authentication Level" from "Connect" to "None". After restarting the PC, the problem finally solved.

Below are the additional steps I tried although I was not sure whether they are one of the solutions or not:
1.      Check ?Enable remote connection?
2.      Select the class name and click on ?Properties?. Check ?Run the application on the computer where the data is located?

Anyway, thanks EDDYYKT.
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