Scenario

You notice that the Exclaimer Client-Side signatures are not downloading in an environment with a proxy server configured and requires user authentication.

You see this error message, logging against Event ID 29004:

Reason

You receive this error message when the Exclaimer software cannot connect to the Exclaimer due to a proxy authentication error. This is visible within the Event Viewer.

Resolution

Follow these steps to resolve this issue:
  1. Navigate to C:\Windows\Microsoft.Net\Framework\v4.0.30319\Config\

  2. As an Administrator, edit the file: machine.config

  3. Add the following to the [configuration] section
  4. Save the file.

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