Reason 4.0 Reason 4.0

A guide to uninstall Reason 4.0 from your system

This page is about Reason 4.0 for Windows. Here you can find details on how to uninstall it from your PC. It is made by Propellerhead Software AB. Further information on Propellerhead Software AB can be seen here. You can see more info on Reason 4.0 at . The application is frequently located in the C:\Program Files (x86)\Propellerhead\Reason folder. Take into account that this path can differ being determined by the user's preference. You can uninstall Reason 4.0 by clicking on the Start menu of Windows and pasting the command line C:\Program Files (x86)\Propellerhead\Reason\Uninstall Reason\unins000.exe. Note that you might get a notification for administrator rights. Reason.exe is the Reason 4.0's primary executable file and it takes close to 15.19 MB (15931904 bytes) on disk.

The following executables are contained in Reason 4.0. They take 15.84 MB (16610650 bytes) on disk.

  • Reason.exe (15.19 MB)
  • unins000.exe (662.84 KB)

The current page applies to Reason 4.0 version 4.0 only. If planning to uninstall Reason 4.0 you should check if the following data is left behind on your PC.

Directories that were left behind:
  • C:\Program Files\Propellerhead\Reason
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Propellerhead\Reason
  • C:\Users\UserName\AppData\Roaming\Propellerhead Software\Reason

The files below are left behind on your disk by Reason 4.0 when you uninstall it:
  • C:\Program Files\Propellerhead\Reason\AIFFLib.dll
  • C:\Program Files\Propellerhead\Reason\AudioCardLib.dll
  • C:\Program Files\Propellerhead\Reason\Demo Songs\AP=X - Xplore Your Mind.rps
  • C:\Program Files\Propellerhead\Reason\Demo Songs\Bjarne O. - Fighting Evil.rps

You will find in the Windows Registry that the following data will not be uninstalled; remove them one by one using regedit.exe:
  • HKEY_CLASSES_ROOT\Reason.cmb

Use regedit.exe to delete the following additional values from the Windows Registry:
  • HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache\C:\Program Files\Propellerhead\Reason\Uninstall Reason\unins000.exe
  • HKEY_CLASSES_ROOT\Reason.cmb\DefaultIcon\
  • HKEY_CLASSES_ROOT\Reason.drp\DefaultIcon\
  • HKEY_CLASSES_ROOT\Reason.grov\DefaultIcon\

A way to delete Reason 4.0 from your PC using Advanced Uninstaller PRO

Reason 4.0 is a program released by the software company Propellerhead Software AB. Frequently, computer users try to uninstall this program. This can be troublesome because deleting this by hand takes some advanced knowledge regarding PCs. One of the best QUICK manner to uninstall Reason 4.0 is to use Advanced Uninstaller PRO. Here is how to do this:

1. If you don't have Advanced Uninstaller PRO on your PC, add it. This is good because Advanced Uninstaller PRO is the best uninstaller and all around utility to clean your system.


2. Run Advanced Uninstaller PRO. It's recommended to take some time to get familiar with Advanced Uninstaller PRO's design and number of tools available. Advanced Uninstaller PRO is a powerful system optimizer.

3. Click on the General Tools category
Go to General Tools

4. Activate the Uninstall Programs button
Go to Uninstall Programs

5. A list of the applications installed on the computer will be shown to you

6. Navigate the list of applications until you locate Reason 4.0 or simply click the Search field and type in "Reason 4.0". The Reason 4.0 program will be found automatically. When you select Reason 4.0 in the list of apps, some data regarding the program is shown to you:

  • Star rating (in the left lower corner). This tells you the opinion other users have regarding Reason 4.0, from "Highly recommended" to "Very dangerous".
  • Reviews by other users - Click on the Read reviews button.
  • Technical information regarding the app you want to remove, by clicking on the Properties button.
For example you can see that for Reason 4.0:

  • The software company is:
  • The uninstall string is: C:\Program Files (x86)\Propellerhead\Reason\Uninstall Reason\unins000.exe
7. Press the Uninstall button. A confirmation window will come up. accept the uninstall by clicking the Uninstall button. Advanced Uninstaller PRO will then uninstall Reason 4.0.
Uninstall Reason 4.0

8. After uninstalling Reason 4.0, Advanced Uninstaller PRO will ask you to run a cleanup. Press Next to perform the cleanup. All the items that belong Reason 4.0 that have been left behind will be found and you will be asked if you want to delete them. By uninstalling Reason 4.0 using Advanced Uninstaller PRO, you can be sure that no Windows registry items, files or folders are left behind on your disk.

Your Windows system will remain clean, speedy and able to run without errors or problems.


Geographical user distribution

  • Windows 7 (6.1)
  • 10.0
  • Windows XP (5.1)
  • Windows 8 (6.2)
  • Windows 8.1 (6.3)
  • Windows Vista (6.0)
Software Application


This page is not a piece of advice to remove Reason 4.0 by Propellerhead Software AB from your PC, we are not saying that Reason 4.0 by Propellerhead Software AB is not a good software application. This page simply contains detailed instructions on how to remove Reason 4.0 supposing you want to. The information above contains registry and disk entries that other software left behind and Advanced Uninstaller PRO stumbled upon and classified as "leftovers" on other users' computers.

2016-07-07 / Written by Daniel Statescu for Advanced Uninstaller PRO

follow @DanielStatescu
Last update on: 2016-07-07 17:11:24.190