My QB desktop will not calculate taxes anymore or recognize my active enhanced accountant subscription

We can try a few things to sort this out, sbs95928. 

We can re-validate the service key in your book, this is to ensure that everything go through smoothly. It would be better to refer this article: Enter or Edit Your Payroll Service Key. It provides the complete information and steps on how to do it.

Once done, let's revert the paycheck. It's a way that the payroll information and for the taxes are calculating. Below are the steps that will guide us on how to do it:

1. Let's open your employees Payroll Information.
2. Locate the highlighted yellow and right-click the name of the employee.
3. Click Revert Paycheck.

I would also like to include this link: How to save or revert pending paychecks. You'll get additional details about it.

Please let me know anytime if you need further help by adding a comment below. I hope you're good. Take care!