Icons no longer in imageres.dll in Windows 10 1903 - 4kb file

In earlier Windows builds, icon resource files were embedded in some DLL in the directory C:\Windows\System32. Since Windows 10 version 1903, they have been relocated to: C:\Windows\SystemResources.

There is now a new extension for these files .mun instead of .mui (which still exist in system32 and syswow64 sub folders.

Specifically, imageres.dll is now found in C:\Windows\SystemResources\imageres.dll.mun.

You now can edit icons from SystemResources more easily, as there are no digital signatures to worry about or syswow64 and system32 files to edit. There are still some files in system32 that contain icons, but most have been relocated.