Error "Proxy authentication is not properly used" appears during depot configuration.

Products

• VCF Operations

Issue/Introduction

• Identity Manager installation fails because the Online Depot cannot connect to fleet management.
• /var/log/vrlcm/vmware_vrlcm.log show thre following error message:

  NTLM authentication error: Credential cannot be used for NTLM authentication

• /var/log/vmware/vcf/lcm/lcm.###-##-##.#.log-debug SHOW the following error:

  ERROR [vcf_lcm,################,####] [c.v.e.s.l.b.d.depot.DepotDownloader,http-nio-127.0.0.1-7400-exec-7] Got exception while downloading file [/metadata/productVersionCatalog/v1/productVersionCatalog.json]: CONNECT refused by proxy: HTTP/1.1 407 Proxy authentication required

Environment

VCF Operations 9.0.2.0

Cause

This issue typically occurs when the VMware Cloud Foundation Deployment Tool (VCFDT) or the Online Bundle Transfer Utility (OBTU) attempts to reach dl.broadcom.com through an intercepting proxy configured with strict NTLM, which the built-in Java/Apache HttpClient download workflows cannot natively negotiate.

Resolution

To resolve the issue, modify the proxy server configuration to use basic authentication for requests explicitly targeting the Broadcom download endpoints (dl.broadcom.com).