Causes and solutions for Internet access failure in IE browser

In recent days, the IE browser has not been connected to the Internet, but the network connection is normal. other browsers can browse the Web page, QQ, and everyone can connect to the Internet. Only the IE browser and IE kernel-based programs cannot run. The Reasons and solutions are summarized as follows:

I. network configuration problems. This is because you need to manually specify IP addresses, gateways, and DNS servers to connect to the Internet and use proxy servers to access the Internet. Carefully check the computer's network settings. Ii. DNS server problems when ie cannot browse the Web page, you can try the IP address for access first, such as using http: // 218.30.80.30 of bbs.winzheng.com. If yes, it should be a DNS problem. The DNS problem may be caused by an error in obtaining the DNS during the connection or the DNS server itself, in this case, 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 normally used elsewhere .) In the network properties, (Control Panel-network and dial-up connections-local connection-right-click Properties-TCP/IP protocol-properties-use the following DNS server address ). Different ISPs have different DNS addresses. Sometimes it is a problem with the vro or Nic and cannot be connected to the DNS Service of the ISP. In this case, you can turn the vro off for a while or reset the vro. Iii. Problems in IE browser when the IE Browser fails, browsing will naturally be affected; or the web page may be inaccessible if IE is maliciously modified or damaged. At this time, you can try to use "Huangshan ierepair expert" to fix the problem (it is recommended to fix it in safe mode), or re-run IE (for example, if you encounter a problem that cannot be re-installed, refer: appendix 1 solves the problem of re-installing ie. IV. Network Firewall problems if the network firewall is improperly set, such as high security level, accidentally putting IE into the blocked access list, and wrong firewall policies, you can try to check the policy, reduce the firewall security level, or directly turn it off and try to restore the normal state. 5. Internet protocol and NIC Driver problems ie cannot be viewed, may be caused by network protocol (especially TCP/IP Protocol) or NIC Driver damage, you can try to re-drive the nic and network protocol. 6. The hosts file is modified, which may lead to abnormal browsing. The solution is to clear the content in the hosts file. 7. System File problems when the system file related to IE is replaced or damaged, it will affect the normal use of IE. In this case, you can use the SFC command to fix the problem, the Win98 system can execute SFC in "run" and then scan; and win2000/XP/2003 execute SFC/scannow in "run" to try to fix it. When only ie cannot browse the Web page while QQ can access it, it is often caused by Winsock. DLL, wsock32.dll, or wsock. vxD (VxD only exists in the Win9x system) and other files are damaged or lost. Winsock is an important part of the TCP/IP protocol. Generally, the TCP/IP protocol must be reinstalled. However, XP began to integrate the TCP/IP protocol, so it cannot be simply uninstalled and reinstalled like 98. You can use the netsh command to reset the TCP/IP protocol, restore it to the status when the operating system is installed for the first time. The specific operation is as follows: click "start running", enter the "cmd" command in the running dialog box, pop up the command prompt window, and then enter "netsh int IP reset C: \ resetlog.txtlogs: The resetlog.txt file is used to record the command execution result. This parameter must be specified. The complete path of the specified log file is "C: \ resetlog.txt ". The result of executing this command is the same as deleting and re-installing the TCP/IP protocol. 8. Real-time Monitoring of anti-virus software is not common, but sometimes it is related to real-time monitoring, because the real-time monitoring of anti-virus software has added monitoring of web content. For example, kv2005 will cause IE to fail to browse the Web page on some machines (many friends have met it). The specific performance of kv2005 is as long as web page monitoring is enabled, after the Internet connection is started for about 20 minutes, ie will be unable to browse the Web page. If kv2005's web page monitoring is turned off, everything will return to normal. After a thorough reinstallation of kv2005, it will not be able to solve the problem. Although this problem does not occur for every sub-machine that installs kv2005, after all, the sub-systems of each machine are different and the installed programs are different. If IE cannot browse the webpage, check anti-virus software. 9. Application Management Service problems can only be opened on QQ pages, it is good to restart. However, even if it is restarted, after opening 7 to 8 web pages, you can only go to QQ. Sometimes, China Telecom often allows you to disable the application management service. The specific cause is unknown. 10. This situation is often caused by virus infection. When I open IE, I am prompted in the lower-left box of the IE interface that I am opening the webpage, but I haven't responded for a long time. Check the process in the Task Manager (enter the method, place the mouse on the taskbar, right-click the Task Manager-process) to see how the CPU usage is. If it is 100%, you can be sure, if you want to run other programs, the virus is infected. Check which process occupies CPU resources greedily. after finding it, you 'd better record the name and click "end". If it cannot be completed, you need to start to secure mode to delete the stuff and enter the Registry. (method: start-run, enter Regedit) in the Registry dialog box, click Edit-search, enter the program name, find it, right-click to delete it, And then perform several searches, it can often be completely deleted. There are a lot of viruses. When anti-virus software is powerless, the only way is to manually delete them. 11. Pay special attention to another phenomenon: You can open the homepage of the website, but you cannot open the second-level link. If so, you can re-register the following DLL files: in start-run, enter regsvr32 shdocvw. DLL regsvr32 shell32.dll (note that this command is not required first) 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 be input. After these commands are input, restart Windows. If it is invalid, enter the second command again. In addition, if it is a 98 system, it may be easier to download this file from Microsoft's website. Appendix 1: solve the problem that IE cannot be reinstalled. Sometimes I want to reinstall IE, however, I am always prompted that I have installed IE, but I cannot reinstall it. The general method is to modify the IE version number in the registry. This method usually works, but sometimes I cannot install it after I change the version number, at this time, you can try the following tips to see if it is feasible: Method 1: Open the Registry Editor and find HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Active Setup \ Installed Components \ {89820200-ecbd-11cf-8b85-00aa005b438 }, if the isinstalled value in the window on the right is 1, change it to 0, and then reinstall IE. (It is strongly recommended to restart the computer after modification, especially the Win98 system .) Method 2: Run rundll32.exe setupapi and installhinfsection defaultinstall 132% WINDIR % \ INF \ IE in the worker runtime. the INF command can be used to reinstall ie from the installation disc. However, the disadvantage of this method is that all the installed IE versions are in the installation disc, rather than the latest version.

In other blog posts in this blog, I have explained how to install and uninstall ie. For more information, see install and uninstall IE.