Found it! I use ANT Download manager which monitors for d/l requests and takes over silently, but on Techspot it seems to interact and cause the d/l to fail. Been using it for years and this is the first instance of such bad behaviour afaik. VPN and extensions on or off in Firefox made no difference. Successfully d/l'd the file. CheersThanks for helping. Something weird going on. My downloading is blocked, but not on all sites! I'll check if Firefox is causing this and get back with findings.