The Rise and Fall of Internet Explorer: A Browser That Defined an Era

It was the king of the internet for nearly a decade. Internet Explorer (IE) wasn't just a browser—it was the browser. At its peak in the early 2000s, IE commanded over 95% of the market. But within a decade, it became a punchline, a security nightmare, and finally, a ghost. Here's how a software giant rose to dominate, then crashed hard.

The Birth of a Monopoly

When Netscape Navigator ruled the mid-1990s, Microsoft saw the web as an existential threat to Windows. Instead of building a browser from scratch, they licensed code from Spyglass Mosaic in 1995. The first version of Internet Explorer 1.0 was a humble add-on for the Windows 95 Plus! Pack. It was free. That was the first blow.

Microsoft bundled IE with Windows starting with 95 OSR2, then integrated it deeply into Windows 98. The "browser wars" were won not by better code, but by installation ubiquity. IE 4.0 even merged with the Windows shell—your desktop icons could be hyperlinks if you wanted. Netscape never stood a chance.

The Golden Age of IE6

Released in 2001, IE6 was a technical marvel for its time. It supported CSS, Dynamic HTML, and ActiveX controls. It launched with Windows XP, the most popular OS in history. For developers, IE6 was the only browser that mattered. Websites were built for IE6. "Works best in Internet Explorer" banners littered corporate intranets.

But the seeds of decay were already planted. IE6 had no tabbed browsing (a feature Netscape had). It had no pop-up blocker. And Microsoft, after winning the antitrust battle in court, essentially stopped innovating. From 2001 to 2006, IE got exactly zero major security or feature updates. The web moved on. IE didn't.

The Security Apocalypse

By the mid-2000s, IE6 was a sieve. ActiveX allowed any website to run arbitrary code on your machine. The browser had multiple "drive-by download" vulnerabilities—just visiting a malicious page could install malware. The infamous "IEFrame.dll" crash loop made rebooting a daily ritual. The browser leaked memory like a broken faucet, slowing your PC to a crawl after a few hours of browsing.

Hackers loved IE6. It was the most targeted software on the planet. Microsoft released patches monthly, but each patch seemed to open two new holes. Security researchers joked that "IE6 stands for 'Insecure Edition'." By 2008, even Microsoft advised users to upgrade to IE7—which itself had security flaws, just fewer of them.

The Competition Catches Up

Firefox launched in 2004 with tabbed browsing, pop-up blocking, and extensions. It was faster, safer, and open-source. Users started switching in droves. Then came Chrome in 2008. Google's browser was minimalist but lightning-fast. It also launched tabs as separate processes—if one tab crashed, the browser didn't die with it. IE7 and IE8, by contrast, were still monolithic. One bad JavaScript loop would freeze the entire browser.

The market share began a long, steady decline. By 2010, IE had fallen below 60%. By 2014, it was around 25%. The web was now built for Chrome and Firefox. IE became the browser you only opened to download another browser.

The Final Nail

Microsoft tried to revive IE with version 9, 10, and 11. IE11, released in 2013, was actually a decent browser—it supported modern standards and was reasonably fast. But it was too late. Chrome had already won the developer mindshare. Microsoft itself started building projects like TypeScript and Visual Studio Code that ran in Electron—which is basically Chromium with a Node.js wrapper.

In 2015, Microsoft launched Edge, a new browser with a new engine. It was a tacit admission that IE was dead. On June 15, 2022, Microsoft permanently retired Internet Explorer. The browser that once controlled 95% of the market officially got put out to pasture.

What We Learned

IE's rise wasn't about better technology, but about distribution. Its fall wasn't about one single flaw, but about complacency. Microsoft had a monopoly and thought it would last forever. Meanwhile, the web evolved—into an ecosystem of rich apps, fast JavaScript, and tight security. IE remained frozen in 2001.

Today, IE lives on as a punchline and in the collective memory of anyone who still hears the sound of a 56k modem connecting. But it's also a cautionary tale. The browser that defined an era also defined how quickly a giant can fall when it stops listening to the web.