According to statistics, one of the most common problems is a website that does not open. The complaint of many inexperienced users is: "I can’t access the site." Several steps can be taken to overcome this problem.
First of all, you should see if other sites open. Check the availability of the ya.ru site in the browser: if it opens, then everything is in order, if it does not open, then through the console (go to the "Start"> "Run"> "cmd" menu and type ping ya.ru on the command line ). If the first option with Yandex verification and the browser did not work, and in the second everything is fine, then try to refuse to use a proxy. Depending on the browser, its settings are set in different places. For Internet Explorer, this is the Start menu> Control Panel> Internet Options > Connections tab> Settings. And for another common Firefox browser, go to "Tools"> "Advanced"> "Customize".
Be sure to see if the site address is specified in the file C: \ WINDOWS \ system32 \ drivers \ etc. Malicious programs often block sites in this way, so it may be impossible for the antivirus to update the database. If after disconnecting the proxy nothing worked, try disabling the add-ons, and then recreate the profiles where possible, or reinstall the browser (Internet Explorer). For example, in Firefox , the default profile is stored in C: \ Documents and Settings \ Username \ Application Data \ Mozilla \ Firefox \ Profiles. If both the browser and the ping commands do not work , then checking the Internet connection is required. If no difficulties were found in this direction, but the computer still signals a browser error, as if saying “I can’t access the site,” check the computer for malicious software with one of the Kaspersky, Avast, or NOD32 anti-virus packages.
Often users complain: "I can’t access the antivirus website, what should I do?" This may be one of the tricks of the virus. You just need to put the latest version of the databases on a USB flash drive using another computer and update the databases manually. To clean up malware of this kind, it is advisable to use a scan before loading the system, since the malware hanging in the memory of your computer can easily "drive the antivirus by the nose." For example, in the free version of Avast, you can order a scan before displaying the Windows splash screen, which is implemented like checking the chkdsk program, which gives a good result regarding the "I can’t access antivirus sites" problem.
So, we briefly touched on those problems with your PC that may prevent the site from opening. But there is also an option with some difficulties on the side of the provider for passing packets or problems on the site hosting. In order to make sure that routing is performed correctly, type tracert SITE_NAME in the Windows console and you can see the IP addresses of the nodes through which IP packets go before reaching the node where the desired site is located. If at some stage the packages do not pass for a long time, stars are displayed in the console, some significant resource, such as vKontakte, may not be available. The problem may be caused by a slow connection, but this is again a question of the quality of the Internet connection and the provider. Then it is advisable to contact support to resolve this issue. Just tell the provider’s specialist: “I can’t access the site,” and they will check the health of their routing system.
The variant with the so-called DDOS attacks of the site server, which is ordered by competitors or enemies of the site, is not excluded. Their methodology consists in a huge number of requests to the server, which physically cannot respond and freezes for the duration of such an attack. To carry out such an activity, cybercriminals use botnets, which are thousands of thousands of virus-infected computers managed from a single center. Accordingly, at this time, access to the site for ordinary users is very difficult, if not impossible.
It should be noted that in Russia in November 2012 the law on banned sites begins to apply. Therefore, many Internet service providers begin preparatory work to prohibit access to such sites from their network by introducing Deep Packet Inspection systems. And many users will soon be outraged: "I can’t access a site that seems to pose no danger to society." So there is a possibility that the called site will soon be banned as extremist. If you really need access, try accessing it using an anonymous proxy or using the RDP protocol using a workstation located abroad.