02-16-2013, 03:39 PM
(This post was last modified: 09-01-2022, 01:01 AM by Fearless Community.
Edit Reason: Checked Encoding
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You are probably on a work or school network that blocked the sites and ports Steam uses to connect to. Tough luck. However, if this is occurring at home and you did nothing out of the ordinary, call your network provider because they might have blocked access to these ports and sites.