Hello, @Nic26.

Welcome to the QuickBooks Community.

I have read that this has been duplicated post. I would like to inform you that you can check on this post.

If you're not notified, here's the link: https://quickbooks.intuit.com/learn-support/en-za/other-questions/re-validation-code-required/01/144...

If you have other questions about reinstalling QuickBooks on your PC, please comment down below. I will be glad to answer you.