If anyone is wondering about IE11, MS says "Internet Explorer 11 will continue receiving security updates and technical support for the lifecycle of the version of Windows on which it is installed."
Extended support for Windows 10 ends on October 14, 2025.
Extended support for Windows Server 2016 ends on January 11, 2027.
Presumably one or those 2 dates could be considered the termination date for IE11. My company has chosen the 2025 date as when we will stop support for IE11 in our web pages/apps.
6 more years is a really long time on the web. You may want to base it instead on usage metrics — IE, once usage drops below what % are you willing to stop testing against a browser?
Win7 support is ending Jan 2020 also, at which point IE11 will only be supported on Win10 (and it's not default there). So that may be a good date to start considering ending IE11 support as well, especially with Chromium-Edge coming out later this year.
If you are selling software to other companies. And out of thousands of companies, one of them bringing a significant percentage of revenue is using IEX, you may want to consider supporting IEX. It can also be useful for future contracts. Usage doesn't mean everything.
Just try to run a B2B SaaS without supporting IE11. You will lose out on a ton of large-but-slow-moving customers. Like banks, insurance companies, etc. who all seem to have critical internal systems that only work on IE11 in compatibility mode.
This is why our company is still supporting IE11, and will be for some time to come.
Personally, I'm hoping the app my team builds will be able to finally drop IE11 support once the new Chromium-based Edge app becomes available on Windows 7 and 8.
Extended support for Windows 10 ends on October 14, 2025. Extended support for Windows Server 2016 ends on January 11, 2027.
Presumably one or those 2 dates could be considered the termination date for IE11. My company has chosen the 2025 date as when we will stop support for IE11 in our web pages/apps.