Under Firewall: Settings: Advanced, is " Verify HTTPS certificates when downloading alias URLs" checked or unchecked? Are you using a proxy server in your network doing HTTPS MITM?
Another patch to try... https://github.com/opnsense/core/commit/b514992# opnsense-patch b514992Cheers,Franco
How are you populating the alias? Sorry if you mentioned it, but I don't want to dig through the entire thread.
What is your configuration on the Alias itself? Can you post a screenshot of the config?
So, I just tested a brand new alias, using this: https://iplists.firehol.org/files/firehol_level1.netsetSet the alias to URL Table (IPs) set the expiration to 1 day 0 hours (So it will refresh daily) and submitted, pfTables immediately shows them.I've attached what the alias config looks like. Can you screenshot YOUR alias similar to how I did mine so I can see what you're doing exactly.