Unable to configure/save proxy settings on Citrix Licensing console for LAS registration causing LAS registration to fail

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Article ID: CTX695960

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Updated On:

Description

Upon reviewing logs, you might either see connections to one of many URLs are either blocked or being returned with failed authorization codes like HTTP 401 Authorization required etc.

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Please note the certificate validation URL above is just one example and underlying FQDN could change and are not fixed URL formats.

It is best to collect network tracing and understand if any network traffic is blocked.

Cause

For online LAS registration, a system‑wide proxy configuration is required on the License Server. This is because certificate revocation checks (CRL/OCSP) are performed by Windows OS components using the system networking stack, not by the Citrix Licensing binaries themselves. If the proxy is only configured for browsers or the LS application, these OS‑level validation calls will fail, resulting in registration issues. Setting the proxy system‑wide, ensures both LAS endpoints and certificate validation services are reachable.

Resolution

Please configure your License server to use system-wide proxy configurable using the "netsh winhttp set proxy" command.

netsh winhttp set proxy <proxy>:<port>

For example: netsh winhttp set proxy 10.0.0.6:8080

Reference - https://learn.microsoft.com/en-us/purview/device-onboarding-configure-proxy#configure-the-proxy-server-manually-using-netsh-command

 

Issue/Introduction

You have configured your License server to use internet proxy which is configured under "Internet Properties" ->  Connections -> LAN Settings -> Proxy server or you are using WPAD proxy.

  1. In the Citrix Licensing Manager, click the Settings in the upper right of the UI.
  2. Click Server Configuration.

  3. Navigate to Configure a Proxy Server section.

  4. Click the Edit  to configure a new proxy server or to update an existing proxy server.

  5. Enter the proxy server name and proxy port number in the following format:

    proxy server name:port number

    For example: 10.211.55.5:808. (This port can be IPAddress:Port or Hostname:Port.)

  6. Click Save. The proxy server configuration is saved successfully.

Post going through the above settings you attempt for Online LAS registration with Citrix Cloud but it fails or times out.

 

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