Hello, I am completely new here in the forum, and you are my last hope especially help from Dominik Reichl. I am not very familiar with software topics and don’t have deep knowledge in this area. I have been using KeePass for many years, and it has always worked reliably. Now, however, I finally updated it, and here we are. I can no longer open any files. I am receiving an error message saying "master key is invalid!" This is a nightmare for me. I have been collecting my passwords in it for years,...