Error -4304: Users having problems activating licenses or starting trials

June 23, 2019
April 9, 2022

Recently we have been receiving reports of end-users in China being blocked from accessing the Imatest license servers (IP address

A message such as “SOAP couldn’t connect to host; Error code -4304″ may be displayed.

Here are the current workarounds to resolve this issue for this subset of end-users:

  • End-users have had success using a VPN to tunnel to either another location within China that is not impacted by an ISP block, or outside of China. This is typically the easiest solution to address the issue.
  • Use offline activation: The offline activation portal accessible through is still functional.

Note: this offline activation approach works both for individual node-locked licenses as well as offline activation of network-based licenses within the Nalpeiron LAN Daemon – which then allows floating licensing, element pools, floating features, etc. all to be used within the application.

We apologize for the inconvenience. Please contact us at with any difficulties you have.

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