Hi , seems little confusion here, please make sure:
1. If you are using local web server for downloading depot file, don't use proxy as it's directly reachable.
2. If you are using proxy then download depot image from Internet/vmware public depot server instead of local server.
Also please make sure reachablilty is there without any restriction like firewall OR required ip and ports are allowed if any firewall or acl is there.
Regards,
Sachchidanand