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A few months ago Steam stopped being able to log in. I thought there may be a server outage so I waited a few days but when it still didn't work I started investigating. I ran through Valve's Network Troubleshooting steps and found that the last one (launching steam in TCP mode via a command line parameter) fixed my issue. Unfortunately while I can now launch Steam I can't connect to any servers once I'm in-game.
I would like to get UDP connectivity working again. It seems that a number of other Steam users encountered the same problem at around the same time as I did. Some of them report that deleting ClientRegistry.blob fixes the issue, but this does not work for me. Users with the same router as me (Asus RT-AC68U) report that disabling NAT Acceleration fixed the issue for them, but again this didn't work for me. I believe I installed WireShark at about the same time as the issues started, but I have since uninstalled it (and WinPcap too) and the issue persists.
I'm wondering what diagnostic tools are available for an issue like this, or if anyone has suggestions of what I should try next.
I'm not sure if it's related, but every now and then almost every program on my computer will go Not Responding. One time I happened to have Task Manager open and I clicked Analyze Wait Chain on explorer.exe (Not Responding) and it said something about waiting on the network. So I believe my computer may have some serious networking issues.
Thanks,
YM
EDIT: Done some more testing, here's what I've found.
Steam works perfectly on a Linux machine on the same network
Steam on my computer will not work without -tcp even when I am at someone else's house. (Coincidentally, they also have an RT-AC68U, but Steam works fine on their computer)
This suggests the issue is with my computer, not with my router.
Steam will not work without -tcp in safe mode (with networking). It does work when used with -tcp in safe mode.
Steam isn't the only program with issues. I cannot see or connect to any servers in any game, not just Steam games. Additionally, I cannot download any torrents.
I have disabled IPv6 on my computer without any improvement.
I would prefer not to format/reset my computer.
1Can you install the steam client on another computer and test that from without your network? That way you know if the problem is local to your computer or somewhere in your network setup (either the local network or your ISP which may try to do 'smart' things). – Hennes – 10 years ago
I can install it on a Linux box but I don't have another Windows box lying around. Will try it tonight. – Joshua Walsh – 10 years ago
Did some research, added extra details to OP. – Joshua Walsh – 10 years ago
2Steam should have a TCP and UDP rule in Windows Firewall (run:
wf.msc
), do you have these? – Louis – 10 years ago1
If you can't even download torrent, but everything's fine in another computer on the same network then it may be a software related problem. Can you run a LiveCD/DVD/USB (e.g. Ubuntu's Try before Install)? Put it on your USB stick, boot from it and try to download a torrent. Does it work?
– Jet – 10 years agoI thought my firewall was disabled, but when I went into wf.msc it turned out I still had a domain firewall active. I turned that off and I still have the same issue. – Joshua Walsh – 10 years ago
Torrenting works when booting Ubuntu off a USB, but the USB doesn't have enough space to test Steam. – Joshua Walsh – 10 years ago
1What antivirus product are you using? Many of them have firewall-related network protection features too. You can try disabling them temporarily. – GuitarPicker – 10 years ago
I am currently running no anti-virus software. – Joshua Walsh – 10 years ago