Hi, @mwyld. 

Let me help you reinstall your Microsoft Office and troubleshoot the issue about exporting from QuickBooks Desktop (QBDT) to Excel.

To provide better assistance, can I ask which options on your end are greyed out? It would also help if you could add the current version of your QBDT and Microsoft Office.

In the meantime, refer to this website for the steps to reinstall your Microsoft Office: Download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. However, if you still need further assistance, I'd recommend contacting their support team: Microsoft Support. 

Since each version of QuickBooks Desktop works with specific versions of Microsoft Office, you can consider reinstalling the earlier version of MS Office that worked with your current version of QBDT in the meantime to continue with the exporting process. 

After this, let me add this article about exporting MS Excel files from QBDT as a guide: Import or export MS Excel files.

Let us know how the MS Office reinstallation process goes. We'll be here to offer ongoing support. Take care.