There is likely another window open that you don't (or maybe can't even) see. Use Alt Tab to sort through open windows and close the extras, leaving just Lacerte. Maybe this will help.

As stated Tool Hub can do a FORCE install This gives two options to get you back on the road.

https://accountants.intuit.com/support/en-us/help-article/accounting-bookkeeping/performing-clean-in...