Most download issues are caused by interference from a security appliance such as a virus scanner. Ask your network administrator whether he can make an adjustment to allow the download to work properly. Ask the network administrator to check the security settings for your proxy or firewall; they might be incompatible with Command Central. If so, ask your IT department for temporary access to a port outside the firewall to download the files. Product jar files and product files downloaded from Empower are verified using SHA256 checksums.