I'm here to help you get your report exported to Excel, tetyanakalyntyuk.
Let's perform a few basic troubleshooting steps to resolve this issue.
We can start by updating your QuickBooks Desktop to the latest release so the program will acknowledge that you have installed Microsoft Office 365.
Once finished, try to export a report to Excel, and if you're getting the same result, you can follow these steps to on how to repair Microsoft Office.
You can also check this article on fixing exporting issues in QBDT: Fix export to Excel issues in QuickBooks Desktop.
Please keep me updated how this works. I want to make sure everything is taken care of.