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Windows 7: No Internet After Uninstalling Avira Internet Security

10 Jul 2013   #1

windows 7 premium 32 bits
No Internet After Uninstalling Avira Internet Security


I am having an issue with one of client machine where after uninstalling Avira Internet Security , i lost my internet connection . weird thing is that , i can still open one website , but not the rest.

Troubleshooting i did so far :

1. cmd-> netsh winsock reset press Enter

netsh interface ipv4 reset press Enter

netsh interface ipv6 reset press Enter

ipconfig /flushdns press Enter

Restart Computer.

2. Reinstalled NIC network card.

3. System Restore

4. Checked with Other Browsers.

Any help is appreciated.

My System SpecsSystem Spec
10 Jul 2013   #2

Windows 7 Professional 64bit

Can you ping your default gateway?
if not check your TP cable and IP configuration.
My System SpecsSystem Spec
10 Jul 2013   #3


In addition rightclick on the connection icon in System Tray to run its Troubleshooter. Then if necessary type Troubleshoot in Start Search box to run the Internet troubleshooter.

Can you access internet in Safe Mode?

Run the Avira Uninstaller (removal tools) for common antivirus software - ESET Knowledgebase
My System SpecsSystem Spec

11 Jul 2013   #4

windows 7 premium 32 bits

Thanks for your time and replies.

Yes, i can ping to my default gateway .
I have tried running troubleshooter and even used the uninstaller tool but still nothing .
and even in the safe mode , i cant access internet.
My System SpecsSystem Spec
11 Jul 2013   #5

Windows 7 Professional 64bit

Can you ping because if you can the problem is dns setting.
But if you can't ping the problem is your routers connection to internet. Try to restart router or do a new dhcp request.

You can also try to use another router or plug your computer direct into the wall and run ipconfig /release & ipconfig /renew in cmd.
My System SpecsSystem Spec
12 Jul 2013   #6

windows 7 premium 32 bits

thenks tomerello for your reply. I have tried ipconfig /release and ipconfig /renew but it didnt helped.
didnt tried ping to yet (this is something new) , neither restarting the router.

let me try it out tomorrow at office.
My System SpecsSystem Spec
12 Jul 2013   #7


Can you System Restore to before removing Avira and the Internet worked?

Then uninstall using the tool this time.
My System SpecsSystem Spec
12 Jul 2013   #8
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

Turn off your modem and router. Shut down your computer.
Reboot your modem and then reboot your router.
Start your computer and see if Windows picks them up.
Sometimes these reboots fixes things and sometimes it don't. It's free to try.
My System SpecsSystem Spec
15 Jul 2013   #9

windows 7 premium 32 bits

The pages which were opening were only a few http and no https of the same website . rest no websites were opening.

no other AV was installed after that as couldnt find the offline trial of avira internet security.

even removed the upperfilter key from registry.

checked and there were no NDIS filter under the network adapter properties available

i tried pinging and it wasnt doing that , so i restarted my router hoping for a reset but still nothing .

on the 2nd pc which started behaving the same after i uninstalled avira from the first PC , i did a system restore today again but even that was not willing to work.

Finally reinstalled Windows . but still , the same situation , can open only certain http pages (but not all http pages, neither any https) :|

how is this even possible !!!!!!! :hmm:
My System SpecsSystem Spec
18 Jul 2013   #10

windows 7 premium 32 bits

could this be some switch issue . can these two pc be connected through same switch ??
My System SpecsSystem Spec

 No Internet After Uninstalling Avira Internet Security

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