just delete the configuration file (texstudio.ini)
Its position depends:
USB version: in the folder where the executable is located
Installed: standard application data directory ( %APPDATA%\texstudio in windows, don't know the folder in linux/osx right now, but should be easy to find out)
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How do i reset it? I tried uninstalling and reinstalling texstudio but it
keeps the configuration.
just delete the configuration file (texstudio.ini)
Its position depends: