Error Message: The System Call Level Is Not Correct

ID: Q224392

The information in this article applies to:

Microsoft Windows NT Server versions 3.51, 4.0
Microsoft Windows 95
Microsoft Windows 98

SYMPTOMS

When you try to send a message using Server Manager to a user logged on to a computer running Windows 95 or Windows 98, you may receive the following error message:

The system call level is not correct.

CAUSE

This behavior occurs because Windows 95 and Windows 98 do not support this type of connection.

RESOLUTION

Use the NET SEND command to send messages from a Windows NT server to users logged on to computers running Windows 95 or Windows 98. To receive this type of message, the computer running Windows 95 or Windows 98 must be running the WinPopup tool. For a computer running Windows NT to receive messages, the Messenger service must be running. By default, the Messenger service is configured to start automatically.

STATUS

This behavior is by design.

MORE INFORMATION

When you send a message using Server Manager, the sending computer attempts to establish a secure connection using Server Side Named Pipes functionality. The receiving computer then sends a broadcast of the message to all connected users. Computers running Windows 95 and Windows 98 do not support Server Side Named Pipes functionality.

The NET SEND command uses Client Side Named Pipes functionality, which is supported by Windows 95 and Windows 98.

For additional information, please see the following article in the Microsoft Knowledge Base:

Q137143 WinPopup Utility Not Supported in Windows NT

For information about configuring the WinPopup tool, please see the following article in the Microsoft Knowledge Base:

Q132887 Err Msg: Unable to Start WinPopup Because No Compatible...

Additional query words:

Keywords : kberrmsg kbtool
Version : WINDOWS:95; winnt:3.51,4.0
Platform : WINDOWS winnt
Issue type : kbprb