- Plesk 12.0 for Windows
Server uses proxy for internet connection. During the running Plesk installer proxy was configured, but
502 Bad Gateway
error appears during downloading the files.
Proxy server configuration issue.
Contact your local network administrator to:
- Make sure to clear/disable proxy server's cache.
- Make sure proxy has proper configuration that allows downloading files from autoinstall.plesk.com
Note: Use the following link for your reference: Changing the Updates/Upgrades Source .