Microsoft KB Archive/247429

= Unable to Open the Primary SNA Server Configuration File =

Article ID: 247429

Article Last Modified on 11/18/2004

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APPLIES TO


 * Microsoft SNA Server 4.0
 * Microsoft SNA Server 3.0 Service Pack 2
 * Microsoft SNA Server 3.0 Service Pack 3
 * Microsoft SNA Server 3.0 Service Pack 4
 * Microsoft SNA Server 4.0
 * Microsoft SNA Server 4.0 Service Pack 1
 * Microsoft SNA Server 4.0 Service Pack 2
 * Microsoft SNA Server 4.0 Service Pack 3

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This article was previously published under Q247429



SYMPTOMS
When you start SNA Server Manager remotely from a computer in a non-trusted domain, SNA Server Manager starts with the following error message:

Unable to open the Primary SNA Server configuration file. Okay to attempt opening a backup SNA Server in Read-only mode?

In the Application event log, event ID 705 is posted with the following information:

Source: SNA Base Service

Description: Logon Failed.

Explanation: Connection request failed due to data security. Access denied ---Error Code : 43



CAUSE
The problem is caused by a user ID or password mismatch between the non-trusted domain computer and the primary SNA Server computer's local account.



RESOLUTION
One solution is to create a trust relationship and add the remote user account to the primary SNA Server computer's local administrators group. Another solution is to add the user ID and password from the non-trusted domain to the primary SNA Server computer's local administrators group.



MORE INFORMATION
The SNA Server configuration file (Com.cfg) is located on the primary SNA Server computer in the SNA\System\Config directory. By default, the Com.cfg file is managed by the primary SNA Server computer's local administrators group. (This can be reconfigured in the SNA Server Manager Subdomain properties by selecting Permissions on the Security tab.)

In order for a non-trusted domain user to be able to remotely run SNA Server Manager, the login user ID and password must be added to the local administrators group on the primary SNA Server computer. Then the credentials are validated through Windows NT Server Pass-through authentication.

For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

247322 Error Reading Configuration File When Using the 3270 Applet

Keywords: KB247429

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