Similar post was closed. This happened about a month ago and again today (10/7/23) after the program updated to version R52.28.
No error or other issue. After a number of transaction entries, I went to Google to visit a web site and my Quicken window just closed. I restarted an my last entry was there, so nothing lost; this is just very concerning.
I use Windows 10 Pro version 10.0.19045