I had been working on multiple PDF files that I had opened via email and via my computer's file explorer and then as I was attempting to open another file via the home tab in the top left, the application said something about maintenance being complete and then forcing me to restart my Adobe session without being able to view or save the documents I had open at the time. Then when I did close Acrobat, and attempted to open the files I had open, it froze and I had to restart my computer 2 times before it worked properly again. And the files I had opened from various emails were not in the "Recent" under the home tab, so I lost all my work and which files I was working on. Very disappointed in the way Adobe forced me to close down all my open files and not save my work. I would have been fine if, when I restarted Acrobat, it reopened to my last opened tabs, but it did not. For a professional product, this needs to be fixed. Ask the user if they want to restart now or later, so they can save their work.