Citrix Licensing: The License Server cannot reach License Activation Service on Citrix Cloud

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Article ID: CTX696004

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Updated On:

Description

Citrix License Server 11.17.2.0 build 53100 cannot reach License Activation Service on Citrix Cloud. You may not see WinHTTP proxy set but still tries to use authenticated proxy

Message: A proxy server is configured using the WnHTTP Autoproxy proxy setting. Manage these settings through the Active directory 

Cause

WinHttpAutoProxySvc service was running

Resolution

 

To disable WinHTTP Autoproxy in an Active Directory environment, you typically need to block WPAD (Web Proxy Auto-Discovery) at the DNS/DHCP level and enforce registry settings via Group Policy (GPO) to stop client machines from finding PAC files, specifically targeting HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp\DisableWpad (set to 1) and potentially HKLM\SYSTEM\CurrentControlSet\Services\WinHttpAutoProxySvc (set Start to 4)

Issue/Introduction

Citrix License Server 11.17.2.0 build 53100 cannot reach License Activation Service on Citrix Cloud. You may not see WinHTTP proxy set but still tries to use authenticated proxy