I was going to start a separate thread for this called "Steam troubleshooting", but Neogaf tells me that my account does not have sufficient privileges...so, I'm going to post it here in hopes that in case anyone else is having the same trouble that I am, perhaps this will help them. Sorry to interrupt the sales talk!
As some of you remember, I posted earlier today about not being able to access the Steam sale or store.steampowered.com via my web browser.
When I visit these sites in the Steam client, I get something that looks like this:
http://www.flickr.com/photos/37539643@N04/7563996350/in/photostream/lightbox/ ...that is two images pasted together...now, my client consistently brings up either a solid black screen or a screen like the one on the far right.
After doing more research, I noticed that the HTML files from store.steampowered.com DO load. However, the images and CSS sheets do not load. The screen looks mostly like in the Steam client, like nothing loaded, and through a web browser, the pages will get a title, but none of the images, text, etc will show up in the web browser. The web page just continues to load and never finishes (nothing ever shows up) until it finally times out.
So, after viewing this:
http://forums.steampowered.com/forums/showthread.php?t=1194981 I think I know the problem.
The site store.steampowered.com only loads the HTML. The graphics and CSS are pulled from two more servers. These additional servers are: cdn.steampowered.com and cdn.store.steampowered.com
In the Steam forums mentioned above, a user pinged one of these servers, and apparently, it went through servers as far and wide as Virginia and Hong Kong.
In other words, the store.steampowered.com server is fine. BUT, the servers that the images and CSS sheets (
cdn.steampowered.com and
cdn.store.steampowered.com) are stored on do not work at all. AT&T, in my city, has apparently blocked those sites or has a DNS problem with them.
If anyone else is having similar problems, I hope this helps them. I posted this on AT&T's support forums, but no word back from them yet. I also did a TON of stuff (clearing cache, changing dns server address to Google's, etc) before finally figuring out that it must be on my ISP's end. A variety of things can cause the issue that I'm having, but ISP's blocking certain server addesses can be part of the problem. Here is an example of an ISP fixing its trouble with Steam:
http://community.bt.com/t5/BB-Speed-Connection-Issues/BT-vs-Steam/td-p/292193 I located that thread via Steam's support forums.
In my client, I cannot access the Store, Community, or News tabs. No images load at all. The HTML loads, but the CSS style sheets do not.
I had no idea that the Steam store page loaded from three different servers.
One last thing: This problem did not start until about noon today...when the servers were getting super-hammered from the sale. I wonder if server traffic is shifted to additional servers during that time, and perhaps a shift in servers caused this problem for me... It would seem that both my ISP and Valve could do something to fix this problem if there were so inclined.