Unable to Open the Primary SNA Server Configuration File

• Microsoft SNA Server, versions 3.0 (all SP), 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3

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?

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:

Q247322 Error Reading Configuration File When Using the 3270 Applet

Additional query words:

Keywords : sna211 sna3 sna4
Version : WINDOWS:3.0 (all SP),4.0,4.0 SP1,4.0 SP2,4.0 SP3
Platform : WINDOWS
Issue type :