Help! I have tried all the suggestions previously posted. I pay $30 a month for this program that I cannot even open. Used to work fine, now it just does nothing when I click on it. Seems like others have the same issue. I uninstalled and reinstalled. I closed in task manager and when I try to "alt and shift" trick, I do not get a prompt about preferences but rather a different window. I am hoping someone will know how to help. Please 🙂
Sorry to hear that Lightroom Classic is not opening. We're here to help.
Could you please share the version of Lightroom (Help > About Lightroom) and the version of Windows on your computer? Did you update the software or your operating system recently? What window do you get in place of preferences?