I used Ccleaner for years, but now it crashes permanently, even after reinstallation (Windows 10, newest free version), as several other users posted. There doesn't seem to be a solution so far, not even a response from the Ccleaner-team (a moderator: " I've flagged both threads up for the staff to bring to the attention of the developers.") A pity, I remove Ccleaner and go searching for alternatives.