You should at least try to convert to the 2013 version since you don’t use any online services or download transactions now. Then it should run on newer versions of Windows. Starting in 2014 they instituted an ID password to get into your own data. I’m staying on 2013.
Do you have all the files from 2001? If your Quicken was before 2010 you should have several files making up the data. The main data file ends in .QDF. All Quicken versions prior to QW2010 store your data in a series of files all sharing the same filename but with different extensions like - .QDF .IDX, .QEL, .QPH and all 4 of those files were rolled into a single-file .QDF starting in 2010.