Yes, you can reinstall the QuickBooks Desktop 2014, @Bridget251064. I'll explain how it works.
Although you can reinstall, it may or may not work as it's an older version that is no longer supported. Moreover, the new Windows operating system might not support it.
I'd also suggest browsing the QuickBooks Desktop discontinuation support hub. This includes useful information on what you need to do about the grandfathered products.
For future use, here's a guide in case you encounter an error while activating QuickBooks: Fix activation, license, and product numbers issues.
You can always get back to us for more help regarding installation or QuickBooks. The Community is available 24/7. Stay safe.
