Microsoft has disabled Internet Explorer on later versions of Windows 10 as they really want people to use Microsoft Edge. However, disabling Internet Explorer 11 might break some software such as Quickbooks 2019, which relied on old fashioned DLLs.
Since 21H2, Microsoft went the extra mile preventing users from re-enabling Internet Explorer 11 by hiding it from GUI ways to turn Windows features on or off (whether you use the app mode interface or the classic optionalfeature.exe interface launchable from control panel’s “Programs and Features”). Instead this needs to be enabled from the command line
dism /online /Add-Capability /CapabilityName:Browser.InternetExplorer~~~~0.0.11.0. or dism /online /Enable-Feature /FeatureName:Internet-Explorer-Optional-amd64.
