Recent versions of MuseScore have the option to revert back to the standard built-in presets or "factory-settings". This can be helpful if your settings are corrupted. This is not a normal occurrence, so it is best to consult the forums first, as there may be a way to solve your problem without resetting everything.
Warning: Reverting to "factory settings" removes any changes you have made to the preferences, palettes, or window settings.
Click Open to leave the Browse dialog and return to the Run dialog. The following text (or something similar) should display in the Run dialog
"C:\Program Files\MuseScore2\bin\MuseScore.exe"
For 64-bit Windows, the location is
"C:\Program Files (x86)\MuseScore2\bin\MuseScore.exe"
Click after the quote and add a space followed by a hyphen and a capital F: -F
After a few seconds, MuseScore should start and all the settings reverted to "factory settings".
For advanced users, the main preference file is located at:
The other preferences (palette, session...) are in:
Type (or copy/paste) the following command into your terminal line (include the '/' at the front):
/Applications/MuseScore\ 2.app/Contents/MacOS/mscore -F
This resets all MuseScore preferences to factory settings and immediately launches the MuseScore application. You can now quit Terminal, and continue using MuseScore.
For advanced users, the main MuseScore preference file is located at ~/Library/Preferences/org.musescore.MuseScore2.plist.
The other preferences (palette, session...) are in ~/Library/Application\ Support/MuseScore/MuseScore2/
Type, (or just copy/paste) the following command into your terminal line:
mscore -F
This resets all MuseScore preferences to factory settings and immediately launches the MuseScore application. You can now quit Terminal, and continue using MuseScore.
For advanced users, the main MuseScore preference file is located at ~/.config/MuseScore/MuseScore2.ini. The other preferences (palette, session...) are in ~/.local/share/data/MuseScore/MuseScore2/