Getting the following error on Steam Mac when attempting to accept gift by clicking on link in the email?
Unable to connect to HTTP Proxy. Your proxy may be misconfigured or offline. -336
Unable to connect to HTTP Proxy. Your proxy may be misconfigured or offline.
Woah! But you don't use a proxy, do you? Solution is simple. For all your Internet connections (just to be safe), in System Preferences, disable Auto Proxy Discovery. Click on screenshots to enlarge.
This worked for me, but your mileage may vary. Now, let's report this on the Steam Mac forum…