Reasons Why Your Browser Fails
The most common reason for Internet Explorer to stop working is the conflict among the many add-ons that your browser has. When you install Internet Explorer, it automatically installs plenty of add-ons. Many of these add-ons might never have been used. Popular add-ons are used to assist research, emailing, bloging, and more. Thankfully, Internet Explorer 9 has fewer add-ons so the problem of hanging due to add-on conflict is less in IE9 when compared to previous Microsoft browsers.
Furthermore, when you install Internet related programs, they add their own add-ons and plugins to the Internet Explorer. Good examples of such programs are download managers and Adobe Acrobat. When you install an antivirus or firewall from Comodo or ZoneAlarm, they push in the Ask toolbar when you choose the express install option.
These add-ons often conflict with each other when invoked and cause your copy of Internet Explorer to stop working. Sometimes, the add-ons create conflicts even as Internet Explorer is loading, thereby causing it to hang.
Some printer devices add their own add-ons when you install drivers for them. A known problem is with the Smart Printing add-on from the HP printers. It often clashes with other add-ons and causes Internet Explorer to hang when you issue the print command.
Among other reasons for Internet Explorer to stop working are: a corrupt installation, a malware or your firewall settings.
The following advises what to do when Internet Explorer has stopped working.