Network Randomly Kicks out

[wildgene789]

Ive been having a problem where my network will randomly kick out. For example ill be browsing the internet then all a sudden nothing will load. i look at the network icon and it has the yellow triangle. To fix this, i have to go into the settings and disable it then reenable it. No i know its not the actual internet because im at college and im directly plugged in to it. School is a tech school internet never goes out.

I reinstalled windows thinking it was a driver problem but it still occurs. My friend things its one of my security programs. Im running Comodo firewall, Avast, and Malwarebytes. What would you say?

 

[mitchell3405]

The Network Notification Icon in Windows 7 is powered by the Network Awareness Status Indicator. The indicator performs the following tests to check your connectvity level:
1. NCSI performs a DNS lookup on www.msftncsi.com, then requests http://www.msftncsi.com/ncsi.txt. This file is a plain-text file and contains only the text Microsoft NCSI.
2.
NCSI sends a DNS lookup request for dns.msftncsi.com. This DNS address should resolve to 131.107.255.255. If the address does not match, then it is assumed that the internet connection is not functioning correctly

If test 1 fails the it moves on to test two which then if successful show your network status as network authentication needed because the DNS lookup worked but it had no access to the file, which most likely is causing by an in browser authentication page blocking access to the text file.

If test 1 is successful it will display internet access. Before it even performs these tests However it checks you TCP/IP settings. If they are misconfigured then it will display no network access as it's network status. If settings are correct then it will move on to the above tests.


To answer your question a firewall may be blocking web traffic therefore blocking the above tests. Check you connectivity level to see what level it matches from above.

 

[hydroment]

Are the settings for the network adapter manually configured or set you auto, such as assigned a static IP or one assigned from DHCP? Also is the DNS set to auto or have you or someone/some program manually set the DNS server settings.?

Normally these are automatically set, given your environment.

To check,
right click the 'yellow triangle',
click 'open network and sharing center',
select 'change adapter settings',
double click on you network adapter,
choose properties,
double click on 'internet protocol version 4',
Observe settings.

The reason I suggest looking here is there could be duplicate IP addresses on the network if for some reason the IP address for your computer has been manually set.

 

[wildgene789]

their set to auto i just reinstalled computer and installed malwarebytes and Avast leaving comodo out of it. Well the problem happened again. Im thinking maybe its Malwarebytes so i deleted it and well we will see. Am i in danger not having malwarebytes?

 

[hydroment]

Gene,

Not a problem not having malwarebytes. I do recommend running some flavor of scanner though.

I have had routers go bad. It is a possibility that the school has an issue with their router. I guess maybe I would check with them, unless you are making use of a router or switch between them and your computer, e.g, a local lan segment for a dorm room.

 

[wildgene789]

Well noone else in my apartment is having this problem. So far without malwarebytes my internet has been fine.

 

[hydroment]

Glad its working for you. Not sure what in malwarebytes would have been causing the disruption.

 

[wildgene789]

Yea i wish i knew the problem because i really want it back.

 

[hydroment]

You could post on their forum and ask if they have any ideas why it would interfere.