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Windows 7: Cannot connect to any open port

08 Aug 2011   #1

Windows 7 Ultimate x64
 
 
Cannot connect to any open port

I have a desktop computer that I haven't started for around half a year. Last week, when I started it, it made a lot of updates and later when I wanted to connect my laptop to it, it didn't work. This used to work in the past, so I started to debug the issue. I have Avast antivirus and the Windows Firewall enabled, I thought they might block something, so I disabled them, but still no luck. The ping works though and the desktop is able to connect to the internet (the browser works), but no incoming connections can be established. I don't think it is a router issue because not even my attempts to connect to the local ftp server installed on the desktop via 127.0.0.1 didn't work.
When I try to connect to the localhost on any port using putty I get a "Connection refused" network error.

Any ideas what can cause this?

My System SpecsSystem Spec
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09 Aug 2011   #2
2xg
Microsoft MVP

Win7 & Win8 64bit
 
 

Welcome to SF,

Please uninstall Avast for now by using this Utility tool.

If issue still persist after removing Avast please post an ipconfig /all output for review?
Click on Start => in run or search box type cmd, choose run as Admin and press enter. Open up a command prompt then Copy and Paste these ipconfig /all >c:\ipconfig.txt . Please attach the .txt file to be found in your Local Disk 'C' on your next post.
My System SpecsSystem Spec
09 Aug 2011   #3

Windows 7 Ultimate x64
 
 

Removing Avast did the trick, thanks a lot! Now I have to see why is Avast causing this problem in the first place.
My System SpecsSystem Spec
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09 Aug 2011   #4
2xg
Microsoft MVP

Win7 & Win8 64bit
 
 

Glad that's an easy fix. You shd try MSE.
Quote   Quote: Originally Posted by viper78 View Post
Removing Avast did the trick, thanks a lot! Now I have to see why is Avast causing this problem in the first place.
You're Welcome.
My System SpecsSystem Spec
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 Cannot connect to any open port





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