Remove unwanted app hotkey in windows

I'm using Windows 10 and an app I recently installed has set CTRL+M+O as a hotkey for launching itself, overriding a common shortcut for Visual Studio (collapse to definition). The problem is, I don't know how to disable it.

I tried searching for an .ink that had this assigned in Properties, but the only one I could find hasn't defined any hotkey. I couldn't find a shortcut manager in Windows to disable these "user-mapped" shortcuts. Can someone help me?

You can try using Shortcut Key Explorer from the good folks at RJL Software, which will scan your PC and find shortcuts with hotkeys saved in it.

http://www.rjlsoftware.com/software/utility/shortcutkeys/download.shtml

Simply run Shortcut Key Explorer and it will automatically load the existing shortcut keys and display them in an easy to read list. From this list you can double-click on any item and edit the properties of the Windows shortcut. This is great for troubleshooting duplicate shortcut keys or shortcut keys you did not even know existed.

As far as I know, the shortcut keys will only work if the shortcut lives on the Desktop or in the Start Menu. So to find all possible culprits, you can open up a command prompt and then run this:

dir /s /b "%APPDATA%\Microsoft\Windows\Start Menu\Programs\*.lnk"
dir /s /b "%USERPROFILE%\Desktop\*.lnk"

This will display all shortcut files on the Desktop and in the Start Menu. Look for one which matches whichever application is opening up. Then open up the shortcut and remove the shortcut key.