what is masetupcleaner.exe

I got the same message just after uninstalling KIES. I have been using Snappea to manage my phone and then I decided to uninstall KIES as I was no longer using it. I restarted right after uninstall and got the Prompt to allow changes by masetupcleaner. Maybe it's a once off operation to finish removing KIES?

Just go to MASetupCleaner.EXE in the Windows/SYSWOW64 Folder and remove the file.

Did so and the message disapeared when re-starting my laptop.

Harold++

I never saw this MASetup.exe until after I uninstalled KIES. (which doesn't work for ****).

Thanks for the tip on  airdroid. I'll check it out. I uninstalled Kies after a major let down by Samsung. I kept the Samsung USB entry in Control Panel->Programs - which I may also delete. Jury's out on that one. 

Masetup popped up on restart so I deleted it from WOW64. I also deleted all files in Wow64 that started with "ma" and had Korean chars in Properties ->Details and were installed on the same date. I'll use CCleaner to clean the registry and afterwards check Regedit Local keys manually. It's a bear to delete Kies and don't recommend anyone installing it. Btw, I'm running W7 Sp1 and have a GS3.

When Kies didn't work properly at first, their Support tried to tell me it was a Dell USB problem. I've been supporting enterprise software for 40 years and knew I was working with a novice. When I asked for a supervisor, she hung up on me. I don't need that. Not sure what smart phone/tablet will be my next but pretty sure it won't be Samsung.

I installed Samsung Kies yesterday, found it useless and uninstalled it. Immediately after a restart I got the masetupcleaner message. I am using Windows 8 Pro. I have gone through all your posts and removed anything I could find relating to this problem in system folders and the windows registry as well. 

I wasn't satisfied with these changes and decided to do a system restore. Luckily I was prompted to restore the system to a point before Samsung Kies was installed.

To restore your PC using System Restore

1. Swipe in from the right edge of the screen, and then tap Search.

(If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, and then clickSearch.) Enter Recovery in the search box, tap or click Settings, and then tap or click Recovery. 2. Tap or click Open System Restore, and follow the prompts.

This is where windows recommends a restore to a point before I installed Samsung Kies. 

Hope this works!!