Security Compliance

Sockets exception error - client cannot connect to ARM

A client connection attempt to ARM fails with the error message: System.Net.Sockets.SocketException (0x80004005)

First published date

5/20/2019 9:10 PM

Last published date

10/28/2020 2:50 PM

Overview

This article details an issue in which a ARM Client connection attempt to the ARM Server fails with the error message:

 

"Connection to the server failed. The authentication method is not supported by the server. Please check the server installation"
System.Net.Sockets.SocketException (0x80004005)

Product section

Access Rights Manager

Cause

The remote station did not respond after a period of time, or the connection failed because the connected host did not respond.

 

This often happens with notebooks when the network changes from WLAN to LAN, thus changing the IP address.

Resolution

  • Empty the DNS resolution cache on both the ARM server and the connecting mobile device:
    • Open the CMD prompt.
    • Run the command: 
      ipconfig /flushdns


      (Screenshot property of © 2020 Microsoft)
  • If this does not resolve the issue, add the IP address of the mobile device into the local DNS resolver (hosts file) of the ARM Server.

    WARNING: This is only recommended if you can verify the mobile device is always assigned the same IP address by the DHCP.

    • Enter the FQDN of the device. For example: 172.24.69.100 TEDemoDC02.8man-te-at.local