Can no longer view database window

I wrote an Access app for my non-profit organization in 2004 using Access 2000. Since that time I have moved to Access 2007, cannot go any higher or I get massive errors. This has functioned well until I upgraded our pc to Win11. After the transition I still had no problems but after one of the automatic security updates I can no longer view the database window, tables, queries, etc. It shows up in the taskbar but clicking on it does nothing.  The database still functions flawlessly but if I need to go to a table to correct some mis-entered data I cant. Any Ideas. Yes I have tried compact and repair, view hidden objects and other ideas from the web to no avail.