Error "com.vmware.vcenter.trustmanagement.impl.InvalidArgumentException: java.io.IOException: Server returned HTTP response code: 526 for URL: http://localhost:1080/external-vecs/http1/adfsdev2019.gic.com.sg/443/adfs/.well-known/openid-configuration"

Products

• VMware vCenter Server

Issue/Introduction

While configuring ADFS, it is throwing below error:

com.vmware.vcenter.trustmanagement.impl.InvalidArgumentException: java.io.IOException: Server returned HTTP response code: 526 for URL: http://localhost:1080/external-vecs/http1/<adfs server>/443/adfs/.well-known/openid-configuration

Environment

Cause

Curl command is throwing below error:

curl -v https://<adfs server>/adfs/.well-known/openid-configuration

Resolution

To solve this issue, please verify the ADFS root certificate and publish it in the vCenter TRUSTED_ROOTS store. See https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere-sdks-tools/8-0/add-a-trusted-root-certificate-to-vsphere-certificate-manager.html for more information