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How to troubleshoot DNS errors


DNS errors are a common problem that can disrupt our internet connection. Among other things we can make life difficult if we are in a hurry or we must navigate for reasons beyond leisure. In today's tutorial we will show you how to troubleshoot DNS in Windows, Mac and Linux.


HOW TO TROUBLESHOOT DNS ERRORS
As a general rule when dealing with this kind of mistakes we are given many alternatives. Some involve downloading programs, others tinkering in configurations that would be better left as they are. That's why today I want to show you a series of commands that will get you out of trouble. So you do not have to download anything, we will simply use our operating system.

TROUBLESHOOT DNS ERRORS IN WINDOWS


What we are going to do is clean the cache of our computer. Normally this information is stored in our PC to lighten the processes. But the counterpart is that you can end up giving errors for multiple reasons. With this, we will open the command console (run - cmd) and write the following:

config flushdns

Once we have it, we give enter to leave it completely clean.

TROUBLESHOOT DNS ERRORS ON MAC


As for Mac OS X we will have to write the following:


  • "Dscacheutil -flushcache; sudo killall -HUP mDNSResponder "(OSX 10.10.4+)
  • "Sudo discoveryutil mdnsflushcache; Sudo discoveryutil udnsflushcache; "(OSX 10.10.10.10.3)


Press enter to carry out the order.


TROUBLESHOOTING DNS ERRORS IN LINUX


If you are a penguin user, what we are going to do is write the following in the command window:

"/etc/init.d/nscd Restart"


IF IT STILL DOES NOT WORK ...

If not work, I recommend that you go through this article Homegrown: How to change the DNS for Internet speed increases.

And I hope you have served this article. Remember that we love to read your comments, so do not hesitate to leave your opinion in the box below.
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