The vCenter Server is not able to reach the specified URL. Ensure that the vCenter Server is connected to the internet, the specified URL is correct, and the latest version(s) is available on the VMware online repository. If the issue persists, please contact VMware Support
/var/log/vmware/applmgmt/applmgmt.log
####-##-##T##:##:## [10247]ERROR:vmware.appliance.update.update_b2b:Got exception while trying discover at URL https://dl.broadcom.com/<token id>/PROD/COMP/PROD/COMP/VCENTER/vmw/#######-####-####-######-#####/8.0.3.00400: NotFound(messages=[{'id': 'com.vmware.appliance.update_error', 'default_message': '%s', 'args': ['The vCenter Server is not able to reach the specified URL. Ensure that the vCenter Server is connected to the internet, the specified URL is correct, and the latest version(s) is available on the VMware online repository.
VMware vCenter Server 7.x
VMware vCenter Server 8.x
The issue is caused due to PROD/COMP present twice in the URL.
To fix this issue please remove one PROD/COMP entry from the URL(As highlighted in the above error ). It has to look like the following:
https://dl.broadcom.com/<token id>/PROD/COMP/VCENTER/vmw/#######-####-####-######-#####/8.0.3.00400