I'm running Windows 7 64-bit on a new Samsung laptop and accessing the internet okay via ethernet cable to my university's ISP. Some sites work fine (e.g. google.com) but I can't access others at all (microsoft.com, topshop.com).
I can't connect to those sites in safe mode with networking. And ping and tracert both fail. There's no proxy.
Other users can connect successfully to these sites using my cable and socket.
I've tried all the following with no success:
- using various browsers (IE9, FF, Chrome)
- creating a new user
- updating drivers
- clearing the DNS cache
- using OpenDNS and Google's DNS
- turning off Avast
- tweaking the MTU
- running MS malicious software removal tool
- running Spybot S&D
- reviewing the hosts file
- disabling the IPv6 options
- repairing / resetting winsock settings
- disabling advanced javascript options
I have run out of ideas… can anyone see anything I've missed??!
Best Answer
I had a similar issue and it was because of MTU size but I see you have already tried that idea. Also I was on DSL and was using PPPoE.
Try setting your Laptop MTU to be much lower say 1000 and see if it works. Then adjust your MTU to be higher.