What is DNS Cache. How to Clean the DNS cache on Windows, Mac and why do you need to do

If you use the services of medium and minor providers, you can often be versed bugs in their DNS servers. This happens with the configuration curve, and problems in the operation of the hardware, and with the errors of the administrators themselves. And pay for it - users of course. At best, instead of the necessary sites, the "server was not found" will be issued, at worst - will start throwing out on all sorts of incomprehensible sites, incl. Even malicious nature. And now you changed the addresses of the DNS servers and ... all the same and continues. What to do? And you just need to clean the DNS cache windows client.

To reset the cache DNS there are two ways:

Method 1. Command String

Press the Start button and write the "Command Line" phrase. Without a difference - Windows 7 or Windows 8, or even Windows 10 - in all versions to start the search and the command line label will be in its results. Click on it and get a black console window. It must be written in it:

ipconfig / Flushdns.

And press the ENTER button. It should work like this:

If everything went well, then as a result you should get the inscription "SuccessFully Flushed the DNS Resolver Cache". This means that Cash Casha DNS has passed successfully. You can still start the command for loyalty:

netsh Winsock Reset.

By this you will reset WinSock settings. Sometimes it also helps.

If you have any problems with the command line, or you need to often clean the DNS cache, then you use this BAT file to download.

Method 2. Restarting the Windows DNS client

Click the Win and R buttons and get the "Run" window:

In it type: Services.msc and press the "OK" button. So we launched system Console Department of Windows WINDOVS. Here you need to find the DNS client service:

Click on it with the mouse to highlight and click on the "Restart" link indicated in the figure of the arrow. After restarting, the Windows Kesha DNS will be reset.

set-os.ru.

How to clean your Windows 7 cache

Surely you often heard the phrase - clean the cache. Allegedly from this computer will add speeds in work. To some extent it is true, but what is the Windows cache and where to look for it? The Word itself comes from the English verb Cacher, that is, to "hide".

Consequently, we are talking about files reliably hidden from the user's eye. So there is, you need to shift the lift of the folders to clean the entire cache of the computer running under windows control 7, XP or other version. But there is more simple ways.

General concepts

There is a minimum of 4 types of cache:

browser;
sketches of files;
RAM ( random access memory).

In addition, some programs in the process of their work can create their temporary files. To remove them, it is enough to clean the cache of RAM.

Before proceeding with the consideration of cleaning methods, it is worth answering the question - what gives Windows itself or working on the computer to remove these invisible files? In most cases, the cache, browser, for example, is great amount Small files accumulating in the process of computer.

We looked at the online video and it already lies in the cache and will be there before rebooting or manual cleaning. They launched the game and she ranked most of the RAM. But when you came out of the game, part of it can remain busy. The same with some programs. At the same time, RAM may not be enough for other tasks. Yes, and on hard disk temporary files without cleaning for a long time Begin to occupy gigabytes of memory.

Why do it endure when you can clean the cache quickly and easily?

Methods for Brazier

In this case, there is no single recipe. Different programs Offer their variations. Clean the temporary files in the browser you can, go to its settings. W. Google Chrome. The required item is called "Clean the Story".

Look more: how to change fonts on Windows 7 Computer

Be careful: you can select only cache cleaning or simultaneously delete saved passwords, visits history, settings for sites and so on.

W. Internet Explorer. This option is referred to as "delete browser magazine", and Firefox has "Delete a recent history".

Method for cleaning memory

To unload RAM from excess rubbish and speed up the computer, first look at the address: Start - computer (right mouse button) - Properties. If your Windows is 32-bit, open the start again and run the program "Run".

Copy the command to the new window:

% windir% \\ system32 \\ rundll32.exe advapi32.dll, processidletasks

and perform. The memory is cleared! For 64-bit Windows, use such a command:

% windir% \\ syswow64 \\ rundll32.exe advapi32.dll, processidletasks

Methods for DNS cache

We are talking about stored data regarding computer requests to Internet servers. If you want to fully clear this story, follow simple actions:

Open Start.
Go to all programs - standard.
Run the command line on behalf of the administrator (right-click).
In the window, enter IPCONFIG / FLUSHDNS and press ENTER. Ready!

Sometimes it is enough to clean the DNS history to open a site that does not want to boot.

Methods for sketches of files

This species Cash allows you to quickly boot up the sketches of photos or video. This is especially useful when there are dozens and hundreds of files in the folder. Therefore, decide whether to clean them.

Open Start.
In the search line, enter "Cleaning the disk".
In the running program, select disc And click on the OK button. The application scans the disk for temporary files.
In the list that appears, select "Thumbnails).

OK and "Delete Files". Ready.

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windowsProfi.ru.

Clean DNS cache on Windows Computer

Most Internet users enters favorite resources from homemade office Computer. Thanks to synchronization, you can start reading at work, and continue at home. But did you come across at least once in your life with the fact that on the same computer site works great, all pages are available and open almost instantly, while on the other you can not connect with the server at all? If you are reading this article, then you probably faced.

Yes, the problem is very often arising due to the fault of the Internet service provider. Especially if it's some kind local company, not a federal giant, which has offices in all regions of the country. If there is no reason to believe that your supplier DNS servers work incorrectly, or the problem is resumed when the server address is changed in the settings network card Computer or in the router itself, the problem is clearly internal. And she is called incorrect work cache DNS.

How to Clean DNS Cache? How does it function and why arise problems with access to individual sites? We will give answers to these questions in today's material. Carefully read the instructions if you also encountered a similar situation.

What is DNS and what is needed by cleaning his cache

If you explain so simple wordsthen DNS is a kind of notebook or the base of all available Internet sites. When you enter the site name in the address bar of the browser, the computer converts this address into a digital format consisting of 4 separated digits among themselves. The task of the DNS server - to the highest possible time to compare the usual letter address with digital. The larger the provider and the better it works technical supportThe better the DNS server will function faster.

The closer the geographically located DNS to your computer, the faster there will be connections to the desired page. That is why almost any provider recommends using your own server instead of public, such as Yandex or Google DNS. To speed up the computer, the computer caches information about all visited sites and stores it in system section Windows. Such a cache is stored both on the operator server and on the local computer. Therefore, if on different computers The site operates in different ways, you need to clean the DNS cache on a problematic computer.

Make a DNS service reset can be in several ways. Let's look at each of them closer.

Cleaning cache DNS

Through the command line

It is very simple and at the same time practically the most reliable way. To clear the DNS cache on a computer with Windows 10, you need to run Windows command prompt on behalf of the administrator and apply multiple commands.

Depending on windows versionIn the command line you can get as follows:

windows 10. Right-click or click the Win + X key combination, then select the "Command Line (Administrator)" string.
windows 8-8.1. Press the combination win buttons + R, enter CMD and click ENTER.
windows 7. Similarly, Windows 8, press the Win + R combination, after which in the search box, type CMD and click the Enter key.

ipconfig / flushdns;
Cleaning the DNS cache through the command line
ipconfig / registerdns;
ipconfig / release;
ipconfig / renew;
netsh WinSock Reset.

Each command should be used in turn, and its input must be confirmed by the Enter key. After graduation, be sure to restart the computer. Clearing DNS cache on your PC with Windows 7 should eliminate problems with unavailability of some web resources.

Restarting the DNS client

To manage the DNS cache is used special windows service. It can be managed through a special computer management menu. Regardless of the version of the operating system, you can get into it in one of the following ways:

To clean the cache, you need to find the "DNS client" service, click on its icon once, after which you press the "Restart" button in the left column. After that, also restart Windows and try to enter the site. Everything should work like a watch.

Restart DNS client

Conclusion

The problem with access to some web resources due to the incorrectly working DNS cache on your computer is solved very simply and quickly. If you use our instructions, you can get rid of difficulties literally in a few minutes. If you notice that your computer often does not allow you to some sites, you will need to clean the cache regularly. In the comments, we ask you to write you some of the two options to solve you.

Nastroyvse.ru.

How to clean the cache in windows 7

≡ 4 July 2015 · Rubric: Computer Liquacity · 35,863 views

In operating room wINDOVS system There are several types of cache. When she is overfed, it creates problems in the operation of the OS. Especially becoming noticeable during the long-lasting work of the computer.

How to Clean Cash Memory

Press PCM on the Desktop "Create" - "Label".

Enter one of the following values \u200b\u200bin "Specify the location of the object".

32-bit:% WINDR% \\ System32 \\ rundll32.exe advapi32.dll, Processidletasks 64-x discharge:% windir% \\ syswow64 \\ rundll32.exe advapi32.dll, processidletasks

32-bit:% WINDIR% \\ System32 \\ Rundll32.exe Advapi32.dll, ProcessIdletasks

64-bit:% windir% \\ syswow64 \\ rundll32.exe advapi32.dll, processidletasks

Enter any name convenient for you and click "Finish"

Run the label whenever you want to free up the RAM.

Or another way. The above values \u200b\u200bare simply copying to "Run" (Win + R) and click "OK"

Thus, you delete unused RAM.

Clear Cache DNS Windows 7

The DNS cache applies to store information about which requests made computers to different servers. When a secondary appeal to one or another server occurs, the cache memory raises the record, thus disappears the need for unnecessary requests. DNS user must update when there is a need to update full information Online.

Run the command (Start -\u003e All Programs -\u003e Command Show). Rotate IPConfig / Flushdns key.

Cleansing sketches

This is done using the "Disk Cleaning" program. We go to "My Computer", right-click Click on " Local disk FROM". In the menu, select "Properties". Open the General tab

In the window that opens, in addition to the necessary one can choose and extra options Cleaning. Then click "OK" and "Delete Files".

If desired, this case can be turned off at all. This is done in the local editor group Policy operating system (Win + R Enter the gpedit.msc and "OK" command). Further on the picture and turn off.

How to clean your browser cache

In any web browser, click the Ctrl + Shift + Del combination of hot keys and choose the desired one.

And you can also use the CCleaner program.

And what ways do you use?

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How to Clean Windows 7 Cache?

For those who still do not know - there are several types of cache in the Windows operating system, which in some cases it is necessary to clean. For example, if problems appear in the system. Consider several cases.

How to clean up the DNS cache in Windows 7?

DNS cache stores information about computer requests to various servers. If the cache already has information about accessing a computer to such a service, then when you repeatedly appeal to the specified resource, the speed of its boot can be pretty increased. At the same time, in some cases it is necessary to clean the DNS cache if you have, for example, there are any problems when contacting various resources, which is not related to the cache in browsers.

To do this, run the command prompt (click "Start" - "All Programs" - "Standard" - "Command Line") and write IPConfig / Flushdns.

How to Clear Computer RAM Cache?

Now we will clean the computer's cache. We will have a little longer on this operation.

On the desktop, click on the right mouse button and select "Create" - "Label" in the menu.

A window will appear. It needs to specify the location of the object. To do this, write something one in the string depending on the configuration:

windows 32 Bit:% WinDir% \\ System32 \\ Rundll32.exe Advapi32.dll, Processidletasks

windows 64 Bit:% WINDIR% \\ SYSWOW64 \\ Rundll32.exe Advapi32.dll, ProcessIdletasks

And click on the "Finish" button.

An icon appeared on the desktop. In order to clear the cache memory, simply press twice the specified icon.

How to Clean Cash Sketches?

Sketches are miniatures of pictures. When you re-load the image, the latter is loaded faster. In some cases, however, the sketches can take a lot of space.

Clear cache sketches simply. Go to the "computer", press the right mouse button on system Disk (Usually it is a C drive) and select the item "Properties". A window appears. On the General tab, click "Clearing Disk".

Wait until the system evaluates.

Select "sketches" and click "Clear System Files".

Windows® 10 and Windows® 8

Being on the desktop, press the key. Windows Key. and enter Cmd..
Press Command line right-click and select Run on the name of the administrator.
Enter the command ipconfig / Release. in command line.
Enter the command ipconfig / renew. on the command line.
Enter the command ipconfig / Flushdns. on the command line.

Windows® 7.

Click Start.
Select the option (All programs.
Choose a section Standard And locate the command line shortcut.
Right-click on the label Command line And select the "Run from the Administrator" option in the menu that appears.
Enter the command ipconfig / Release. on the command line.
Wait for the message that the IP address was reset.
Enter the command ipconfig / renew. on the command line.
Wait for the IP address to be restored.
Enter the command ipconfig / Flushdns. on the command line.
Close the command prompt and try to connect again.

In this article, you will find instructions for updating the IP address and DNS. This procedure helps to solve common compound difficulties.

Open Menu Network: menu Apple. > System settings > Net.
Choose active connection In the Network menu and click Additionally.
Click TCP / IP., Next click Request DHCP Address. This procedure May take a few minutes.
Close the window Net.

To reset the DNS cache:

Open the terminal: Transition\u003e Utilities\u003e Terminal.
Depending on the MACOS version, use one of the following commands to reset DNS:
- macOS HIGH SIERRA (10.13), macos Sierra. (10.12) and OS X EL Capitan (10.11): sudo dscacheutil -flushcache
- macOS Yosemite (10.10.4+): sudo Killall -Hup MdnsResponder
- macOS Yosemite (10.10 until 10.10.3): sudo Discoveryutil MDNSFLUSHCACHE.
Repeat the connection.
Note:The terminal will not give any message if the procedure has passed successfully.

If you found a link to this instruction as a result of issuing your search engine And they decided to familiarize themselves with her, then surely became interested in how to clear the DNS cache in the Windows operating system. It will also be logically assumed that you have already received errors with when trying to connect to the Internet.

If your computer is the only one in the network that can not install an Internet connection, while others work normally at this time, then you have a good chance to try to clear it DNS-cache. This will help correct the problem.

This solution must be taken if you change the address of your DNS server to another and will ensure that your PC will request it in a new one, and will not use a pre-cached address. Let's see how this can be implemented in practice.

The first decision is suitable for all versions. operating systems Windows, starting with XP and ending with a new top ten. The second is only for 7, Vista and XP.

How to Clean the DNS cache

Run the command prompt with administrator rights. This can be done using the search field on the taskbar or in the Start button menu, followed by a call of the context menu by clicking the right mouse button on it and select the start-up method on behalf of the administrator.

Enter the following command:

Ipconfig / Flushdns.

and press the ENTER key on your keyboard. The execution of this team should usually correct the problem. However, some individual applications may have their own DNS cache, which also needs to be released. As an example, you can take a web browser Mozilla Firefox.which is at least you need to close and run again. This may not be enough, so you have to clear the web browser settings.

In Windows XP, Vista, 7 you can try to restart the service itself that processes caching. If you use one of these operating systems, in the command line window, perform such commands alternately:

NET STOP DNSCACHE NET START DNSCACHE

enter each of which confirm the Enter key.

If you have the need to restart the same service in the tenth version of the OS, try only to restart the computer. This simply action will automatically restart not only it but all other parts software on PC. Blind and read other useful and interesting computer advice that we picked up specifically for you.

Imagine this situation: you decided to enter the Internet and visit some site, maybe even this one. And here on you, the error crashes that the pages do not exist, the user updates several times the page, and then just closes it. Of course, the subscriber of the site after a while will visit the site again to check its performance, but the new visitor is hardly returning. It is clear that it is bad and for the site owner and for a user who is looking for information.

Such a problem happens, either on the side of the host on which the site is located, or thanks to fraudsters or other "bad", hacked the admin panel in some way and changed the DNS server.

It is clear from the foregoing that the problem must be solved. Who still did not understand what DNS addresses are, now I will explain.

What is DNS and how to access the site?

Everyone has computer devices On the planet there is a specific name, with which they can communicate with each other, these names have digital values \u200b\u200band are referred to as IP addresses. DNS is decrypted as a domain name system and converts the letter value into digital. In other words, you go to the site site, and it is converted to some 22.222.222.22 using a domain name system. You can check the computer's IP address: open the command line and enter the command there ipconfig .

Thus, your computer, when visiting my site, will contact the computer on which the site is, that is, the connection between IP addresses.

When changing DNS addresses on the left you will be displayed you will be displayed that the pages do not exist, although in essence it is also stored on the hosting.

How to solve the problem?

If the problem is on the side of the provider, then it is necessary to wait an hour or two, DNS addresses usually update during this period. At this time, if you do not fail to enter the site, you can use anonymizers or DNS servers from Google.

Next Case DNS Cash Your Computer. In Windows, there is a DNS cache, that is, when you visit any sites, DNS information and other data is entered into the cache so that the next time you enter the opening process of the page was faster. It is possible that the cache has received data about other DNS servers and even if the site owner has already corrected everything, or they have fixed everything on the hosting side, the cache just does not disappear from your computer.

To clean the DNS cache you need to open the command line on behalf of the administrator and enter the command. ipconfig / Flushdns. .

After this action Cache will be cleaned.

You can still lose network settingsFor which in the same command line I enter the command netsh Winsock Reset. . Then reboot the computer.

Now you know what to do if the page is not available. But this is not the only reason, there are still many others and we will talk about them in future articles.

Those people who are somehow connected with the development of sites, for sure at least once, but came across the following problem. There is some site to which you can easily get from some computers, but not from all. For example, you work in the office on some site, and you can not get on it, although it seems to be everything in order. This is quite often happening with young sites or with those sites that move to other servers. I came across such a problem and I, her decision was simple enough, it was necessary to simply clean the DNS cache.

Let's figure out what you need to do. The first thing you need to do is run the command line. For this, Zhmame "Start - All Programs - Standard - Command Line" Or press the "Start" button and enter the query in the search bar "command line".

Now we write the following on the command line: ipconfig / flushdns and click the ENTER button.

If you are a lucky person in life, then on this you can all end and cache clear. However, you may be given the following error:

"Clear DNS recognition cache does not manage." This error may arise due to the fact that you do not have the DNS client service.

Include either restart the service. To do this, click the "Start" button and in the search string we write the word "service".

We are looking for the service "DNS client" and launch either restart it.

We look, whether our problem was solved. If not and the site is still still unavailable, then the cache must be cleaned from the provider itself, and this is not an easy thing, because you have to call the technical support and ask them to do it. If technical support does not help you and will pretend that nothing knows, then you will have only the last option - this is to register a site that does not open in the Hosts file.

Find the file to the address C: -Windows-System32-Drivers-etc.