Network connection not available online

First, the network setup problem

This reason is more than the need to manually specify the IP, gateway, DNS server networking mode, and using a proxy server to access the Internet. Carefully check your computer's network settings.

Problems with DNS servers

When IE can not browse the Web page, you can try to access the IP address, if you have access, then it should be a DNS problem, causing DNS problems may be connected to the network when the DNS error or the DNS server itself problem, then you can manually specify the DNS service ( The address can be the DNS server address provided by your local ISP, or the DNS server address can be used elsewhere. In the properties of the network, (Control Panel-Network and dialing connections-Local Area Connection-right key property-TCP/IP protocol-Properties-use the following DNS server address). Different ISPs have different DNS addresses. Sometimes it is a problem with a router or network card that is unable to connect to the ISP's DNS service, which allows the router to be shut down for a while, or to reset the router.

Another possibility is that there is a problem with the local DNS cache. In order to improve the speed of Web site access, the system will automatically have visited and obtain the IP address of the site into the local DNS cache, once the site is accessed, it is no longer through the DNS server and directly from the local DNS cache to remove the IP address of the site to access. Therefore, if there is a problem with the local DNS cache, it can cause the Web site to be inaccessible. You can perform ipconfig/flushdns in run to rebuild the local DNS cache.

Third, the problem of IE browser itself

When IE browser itself fails, it will naturally affect the browsing, or IE can be malicious modification of the damage will also cause the Web page can not be browsed. At this point you can try to use "Huangshan ie repair Experts" to repair (recommended to the Safe mode of repair), or re ie (such as reinstall IE encountered can not be repeated problems, can refer to: a solution can not reload IE)

Four, the network firewall problem

If the network firewall is not set up properly, such as high security level, accidentally put IE into the block access list, the wrong firewall policy, and so on, you can try to check the policy, reduce the firewall security level or directly turn off the test is back to normal.

V. Network protocols and Nic-driven issues

IE can not browse, there may be network protocol (especially TCP/IP protocol) or network card driver damage caused, can try to reconnect the network card driver and network protocol.

Vi. issues of the hosts document

The Hosts file is modified, will also cause the browsing is not normal, the solution is of course, the contents of the Hosts file empty.

Vii. problems with system documentation

When the system files related to IE are replaced or damaged, it will affect the normal use of IE, you can use the SFC command to repair, WIN98 system in "Run" in SFC, and then perform a scan; Win2000/xp/2003 performs a sfc/scannow attempt to fix it in "run".

In which only IE can not browse the Web page, and QQ can be on, it is often due to winsock.dll, Wsock32.dll or Wsock.vxd (VxD only in the Win9x system exists), such as file damage or loss caused, Winsock is constituted tcp/ IP protocol is an important part of the general need to reload the TCP/IP protocol. However, XP began to integrate the TCP/IP protocol, so it is not easy to uninstall and reload as 98, and you can reset the TCP/IP protocol by using the Netsh command to revert to the state of the operating system when it was first installed. The specific actions are as follows:

Click "Start", enter "CMD" command in the Run dialog box, pop-up Command Prompt window, then enter "netsh int ip reset c:resetlog.txt" command will return to, where "resetlog.txt" A file is a log file used to record the results of a command execution, which must be specified, and the full path of the log file specified here is "C:resetlog.txt". Executing this command results in the same effect as removing and reinstalling the TCP/IP protocol.

Tip: The netsh command is a command-line-based scripting tool that you can use to configure and monitor Windows systems, and it also provides an interactive network shell interface, which is used in the format of the Netsh command, see the Help file (enter "netsh/?" in the prompt window). can be).

The second workaround is to fix the above file, Win9x use SFC to extract the above files, win2000/xp/2003 use the Sfc/scannow command to repair the file, and when Sfc/scannow cannot be repaired, You can try the online release of the repair tool specifically for this problem winsockfix, you can search the Internet to download.

Viii. real-time monitoring of antivirus software

This is not often seen, but sometimes it is related to real-time monitoring, because now the anti-virus software real-time monitoring has added to the content of the Web page monitoring. Give an example: KV2005 will be on the individual machine will cause IE can not browse the Web page (many friends have encountered), its specific performance is to open the Web page monitoring, a boot on the internet about 20 minutes later, IE will not be able to browse the Web page, then if the KV2005 of the Web site monitoring turned off, everything back to normal; The KV2005 can not be solved after completely reloading. Although not install KV2005 every machine will appear this problem, after all, each machine system is different, the installation of the program is not the same. However, if IE can not browse the Web page, but also pay attention to the anti-virus software to check.

Ix. Problems of application Management Services

There can only be on the QQ can not open the Web page situation, restart after the good. However, even if the restart, open 7 to 8 pages after the page can not open, only on QQ. Sometimes telecommunications will allow you to disable Application Management service, you can solve. The specific reason is unknown.

X. Infection caused by virus

This situation is often shown in the open IE, the IE interface in the bottom left box prompts: Open the page, but no response for a while. Look at the process in Task Manager (go to the method, put the mouse on the taskbar, right-click-Task Manager-process) to see how the CPU occupancy rate, if it is 100%, can be sure, is infected with the virus, then you want to run other programs is simply a suffer. This is to find out which process is consuming CPU resources greedily. Find, it is best to record the name, and then click the end, if you can not end, you want to start to Safe mode to remove the Dongdong, but also to enter the registration table, (method: Start-run, input regedit) in the Registry dialog box, point edit- Find, enter that program name, find, click the right mouse button to delete, and then do a few more searches, often can be completely removed clean.

There are a lot of viruses, anti-virus software powerless, the only way is to manually delete.

Xi. Unable to open level two link

There is also a phenomenon needs special attention: is able to open the homepage of the site, but can not open the level two link, if so, the processing method is to re-register the following DLL file:

In Start-run ENTER:

regsvr32 Shdocvw.dll

regsvr32 Shell32.dll (Note this command, first do not lose)

regsvr32 Oleaut32.dll

regsvr32 Actxprxy.dll

regsvr32 Mshtml.dll

regsvr32 Urlmon.dll

regsvr32 Msjava.dll

regsvr32 Browseui.dll

Note: Press ENTER for each entry. The second command does not need to lose, after the completion of these commands restart Windows, if found invalid, and then re-enter again, this time enter the second command.