Sign up ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

In Windows 7, after a few weeks of running Hamachi VPN, the internet icon in the system tray shows a red "X", indicating I have no network connection:

enter image description here

This is false, as I am not only connected to two networks, I'm also connected to the internet (as shown below), therefore, the icon should show no errors.

enter image description here

I've researched the LogMeIn Hamachi help forums and several other related forums and no one seems to have posted a working solution.

What I've Tried So Far:

  • I have uninstalled Hamachi

  • I reset the local LAN adapter.

  • I have changed the order of listed connections in Network Connections > Advanced > Adapters & Bindings

  • I have disabled IPv6 on both networks, and one at a time

  • I deleted the "Incoming Connection" I had for my Windows 7 VPN in Network Adapters

I've run my research resources dry and I'm out of ideas. Any suggestions?

share|improve this question
Have you tried Resetting (enabling/disabling) the main adapter through Change adapter settings? – Yass Oct 18 '13 at 20:09
@Yassar Yes, no change. I added that to my question. – Moses Oct 18 '13 at 20:15

5 Answers 5

up vote 11 down vote accepted

At first, I thought this didn't work, so I moved on, but it turns out I didn't allow enough time for it to work:

I followed the instructions in the high rated answer in this thread.

  1. Click Start, [click Run], type regedit, and then press ENTER.

  2. Locate and then click the following registry subkey:

  3. Right-click this subkey, click Export , and then save the selected branch in a file.

  4. Click the Network subkey again, and then delete the Config entry. Do not delete the >Network subkey. The Config entry will be reconstructed when you restart the computer.

  5. Restart the computer. You may have to manually turn off the computer.

  6. The config key is re-created on the next boot up.

The final step (6) takes a few minutes to complete. During that time, I unplugged my network cable and replugged to initate the internet connection and the key rebuild.

share|improve this answer
Thanks! This worked for me. It was only for 5 minute but I knew it would eventually drive me insane. Haha. – blissfool Jan 5 at 15:26
Had the same thing, but simply detaching and reattaching my internet cable (without steps 1-6) got it working for me. – monty Apr 13 at 23:45
Thanks!!! This worked..... – ThN Sep 5 at 2:47

Lets try flushing DNS cache and renewing your IP.

Flush the DNS cache and restore MS's Hosts file ... Copy and paste these lines in Note pad.

@Echo on
attrib -h -s -r hosts
echo localhost>HOSTS
attrib +r +h +s hosts
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
del %0

Save as flush.bat to your desktop. Right click on the flush.bat file to run it as Administrator.

Your computer will reboot itself.

this solved my issue.

share|improve this answer
The 3 ipconfig commands worked for me (release, renew, flushdns). – firedfly Jan 6 at 17:05
Solved my issue, thanks. – Jean-François Savard Jan 9 at 19:52

If you are able to verify that you are connected to the internet, the icon should have no bearing on anything. However, I can understand how it is tough to look at. Try opening a command prompt as an admin and typing:

c:\ipconfig /release

c:\ipconfig /renew

c:\ipconfig /flushdns

c:\ipconfig /registerdns

See if any of these help.

share|improve this answer
I agree with the first bit, it was more of an annoyance. Thanks for the tip, though I've solved the problem. – Moses Oct 18 '13 at 20:34
This worked for me when I got hung up (actually the /release did the trick). I checked out what Moses did in the hopes of a permanent cure, since this happens once every few days to me.... hmm, his answer doesn't seem relevant, since I'm running of a virgin (well, no, but not upgraded from Vista) Win7 system with no hardware upgrades. – Ira Baxter Jun 11 at 6:52

From the Control Panel:

  1. Go to Device Manager
  2. Expand the Network Adapters section
  3. For each device, right-click/uninstall the adapters.

Restart when all done.

share|improve this answer

This happens whenever you set up a new incoming connection.

It happened to me a while back and I was unable to find a solution apart from going to 'Network Connections' and deleting the incoming connection.

I think it's just a glitch within Windows.

share|improve this answer
I did have a VPN set up, and deleted it, but it didn't solve the problem. – Moses Oct 18 '13 at 20:17

protected by Community Jul 13 '14 at 5:35

Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.