If you are set on using Folderico, follow these steps to ensure your PC stays clean:

Instead of a Pro key, download free .ICO sets from sites like Flaticon or DeviantArt and apply them using the standard Windows "Customize" tab.

Folderico has gone through several iterations over the years. Understanding which version you are looking for is the first step to getting it running legally and safely.

Only get the installer from the official Teorex website.

Check if there are any for the Pro version

Older versions often found on "abandonware" sites.

Cracked software often lacks the latest Windows 10 or 11 updates, causing explorer.exe to crash.

If you can't find a legitimate way to activate Folderico, several free or more modern alternatives exist that don't require hunting for shady keys.