In this article, we’ll show you how to clear your DNS cache on Mac, Windows, and Chrome. Your computer keeps this information in its cache to quickly point browsers in the right direction. Now that I've entered all three of them in I can be sure, 99% sure, that I've cleared my DNS cache and I can try to see if my problem has been resolved.Have you even been asked to clear your DNS cache? It is a troubleshooting tip that helps you get to the latest version of a website, particularly after DNS changes.ĭNS information tells your browser where to find a website. So it didn't really hurt for me to do all three of them. Now notice how, even though I'm using Mojave, it was fine with all of those commands. There is a third command that sometimes, particularly for Yosemite, is needed. Notice it doesn't ask me the password because I just entered it. But also this one as well so you may want to try that. This command here is one that is required for resetting DNS cache no matter what version of Mac OS you're using as long as it's somewhat recent. Say if you're using Yosemite or El Capitan, you know, do this or that. Different websites tell you different things. Now there are some other commands you can use especially if you're using older versions of Mac OS. For good measure you may want to restart Safari and then see if the website you're having trouble getting to now works. Then I'll enter my password and hit return and that's it! In most cases, especially Sierra and newer, that's all you need to do. The same password you use to log into your Mac after you reboot it. So you have to have a regular Mac account, an Admin account, in other words and use your admin password. ![]() This sudo in front of it is basically saying that in order to use this command you need to enter your password. The main one, especially if you're using Sierra, High Sierra, or Mojave is simply to use this basic command here and it basically kills and restarts the DNS responder which will then clear the cache. So I'm going to show you all the different answers because it really doesn't hurt to try some of these. Now if you search around and try to figure out how to flush your Mac DNS cache you're going to come up with a bunch of different answers. So I'm going to search for and look for Terminal and then I'm going to use this command. In order to flush you need to go into the Terminal. Sometimes flushing your DNS cache is the key to solving that. Like say you can't get to a particular website anymore but other websites seem to work. So you may end up in a situation where you're having an issue getting to certain websites. So every once in awhile you have to flush the DNS cache. This is particularly true if you're a developer and you're working with new websites that are moving around in different servers and things like that. ![]() However every once in awhile a domain name will update and your cache will be old. Everything will just work fine and that's true of most users most of the time. Now typically you never have to worry about DNS cache. So instead of doing a lookup every time it just remembers those and saves those in a cache. It may have to do a dozen or more lookups on different domain names. There could be elements from all sorts of different domains there. After all when you go to a website, like perhaps a newspaper website say, and it has tons of images and ads and all sorts of things. A DNS cache is basically going to keep that around so it doesn't have to do the lookup every time. It has to look up the name and see what the numbers are. ![]() Now every time you go to a website it has to do that lookup. ![]() DNS, domain name servers, are the way that the names are translated into numbers. So while you may see names like or actually what your browser wants is a series of numbers. DNS is a service where the name is then matched with a number, an address, which is usually a series of four numbers that shows where the server is that has the information that you want. Now, what is a DNS cache? Well when you go to a website you usually type the name of the website like or. So today let's take a look at flushing your DNS Cache. Find out how you can become part of that at /patreon. MacMost is brought to you by the more than 300 people that support it through its Patreon Campaign. Video Transcript: Hi, this is Gary with. Check out How To Reset Your DNS Cache at YouTube for closed captioning and more options.
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