Here are some common tasks you can perform using Regedit:
Windows doesn't natively recognize every file extension — like .ff — so you can use the Registry Editor (regedit) to create or change file associations, icons, and context-menu actions. Below is a step-by-step, safe, and engaging walkthrough for creating a custom .ff association, plus a few creative ideas for using it. file regedit ff
Two versions of firefox on computer - How do I get rid of one? Here are some common tasks you can perform