VMware vSPhere 6.7 : Error during guest introspection VM Deployment "Unable to access agent offline bundle at https://NSXManager. Failed to download metadata"

Problem:

Unbale to deploy NSX guest introspection in vSPhere 6.7. It throwing below errors.

VMware vSPhere 6.7 : Error during guest introspection VM Deployment "Unable to access agent offline bundle at https://NSXManager. Failed to download metadata"

Unable to access agent offline bundle at https://NSXManager . Cause : <esxupdate-response> <version>1.50</version> <error errorClass="MetadataDownloadError"> <errorCode>4</errorCode> <errorDesc>Failed to download metadata.

Reason:

Any one of the below issues can be the cause of this error.

1. Wrong DNS Server IP is configured in ESXi Hosts.

2. DNS port 53 is not opened in firewall between ESXi and DNS Server.

3. ESXi, vCenter and NSX Manager are not resolving by forward and reverse DNS lookup.

Solution:

Verify the DNS configuration and required DNS ports configuration in firewall for ESXi, vCenter and NSX Manager.