I've just tried to install an older version of the app, from https://support.logi.com/hc/en-za/articles/4418699283607-Logi-Options . This web page allows to download, say, 1.82.618412 , but what actually gets installed is 1.89.705126. Thus, that web page (and/or) the installer are completely broken and misleading. This is absolute nonsense that you don't provide any means to recover from a faulty update (the 1.89.705126 version seem to be completely broken - it looks like it makes mouse unusable).