To enable it, go to Edge Settings > Default Browser > Allow sites to be reloaded in Internet Explorer mode.
Avoid third-party "IE11 download" sites (e.g., ie11-offline.com or file archives). These are common vectors for malware, adware, and toolbars. Only use download.microsoft.com subdomains or the official Microsoft Update Catalog. internet explorer 11 offline installer download
For security and compatibility, please use Microsoft Edge's IE Mode rather than attempting to run the standalone Internet Explorer 11 application. To enable it, go to Edge Settings >
Pending Reboots: If your computer has other updates waiting for a restart, the IE11 installation may be blocked. The Modern Alternative: Edge IE Mode Only use download
The Internet Explorer 11 offline installer is a relic of a different era of the web. While it remains a lifeline for maintaining legacy enterprise systems, it is effectively a "zombie" product—still functioning in narrow use cases but officially dead.
Unlike the web launcher (a 2-3 MB file that downloads components during installation), the contains the full set of .cab and .exe files required to install IE11. This file typically ranges from 50 MB to 120 MB depending on the target architecture (x86, x64, or IA64) and Windows version.