This article is for educational and historical purposes. Modifying system files violates Microsoft’s EULA and can destabilize your OS. Always back up your data before using third-party patchers.
If you manage to find a clean copy on an old USB stick, treat it with respect. Run it on a VM, smile at the Aero folders, and remember 2013—when a portable icon pack was the ultimate act of desktop defiance. windows 7 icon pack by 2013 windows 81 portable
You cannot replace icons that are in use. Press Ctrl + Shift + Esc to open Task Manager. Find "Windows Explorer," right-click it, and select "End Task." This article is for educational and historical purposes
Assuming you have a Windows 8.1 machine (or a VM) and the file named Win7_Icon_Pack_8.1_Portable_2013.exe : smile at the Aero folders