Monitor changes to Registry in Windows 10/8/7 using built-in FC.exe tool

Windows does not have an inbuilt Registry monitoring tool. But what you can do is, harness the Windows command-line program File Compare or fc.exe to compare two registry export files, and thus monitor Windows Registry changes. You can also use some freeware to monitor changes to the Registry on your Windows 10/8/7 system.

Monitor changes to Registry

File Compare fc.exe

To use this File Compare or fc.exe program, first, export a .reg file, & name it as say rega.

After the change takes place, export the changed .reg file & name it as say, regb.

Now, open a command prompt and type:

fc /u rega.reg regb.reg > regcompare.txt

Since .reg files use Unicode, the /u switch, tells fc.exe to use Unicode.

You can now inspect the output regcompare in Notepad.


You can also try this 3rd party utility WhatChanged to monitor the changes in your Windows 10/8/7 registry, easily.

Monitor changes to Registry

Simply download this portable app whatchanged and run it before and after the change.

Sysinternals Process Monitor

Sysinternals Process Monitor is a great freeware, to monitor registry changes in real time. Process Monitor is an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity. It combines the features of two legacy Sysinternals utilities, Filemon and Regmon, and adds an extensive list of enhancements including rich and non-destructive filtering, comprehensive event properties such session IDs and user names, reliable process information, full thread stacks with integrated symbol support for each operation, simultaneous logging to a file, and much more.


RegShot is another small registry compare utility that allows you to quickly take a snapshot of your Registry and then compare it with a second one; done after doing system changes or installing a new software product. The changes report can be produced in text or HTML format and contains a list of all modifications that have taken place between snapshot1 and snapshot2. Get it here.

There are other tools that can help you monitor the changes in the Windows Registry; they are:

  1. Registry Live Watch
  2. LeeLu Monitors AIO System Monitor
  3. RegFromApp
  4. Registrar Registry Manager Lite.

These may also interest you:

  1. De-Mystifying Windows Registry.
  2. How To Back Up, Restore, Maintain Windows Registry.
  3. How To Restrict Access to Registry Editor, etc.
  4. How to open multiple instances of the registry in Windows.
Posted by on , in Category Windows with Tags
Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.

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