Several of our users have reported issues using the Export to Excel option from within our custom Model Driven apps.

This seems to be affecting all tables and all the different export options (open online, static worksheet sheet, etc)
They get the same issue on all different apps and across all environments.
After clicking the Export to Excel option, they receive an Unexpected Error popup as below with Error Code: 0x80040216

We're using Microsoft 365 Enterprise with latest Windows & Office updates installed.
We're using Edge browser and have tried clearing all Cookies and settings.
We've also checked that no files are awaiting attention in Excel and have tried Deleting cached files in Excel.
It seems client specific as a user logging on to a different PC seems to work, but the issue soon returns.
One user has had their laptop completely rebuilt, and although this fixed the issue initially, within a day the issue was occurring again on their laptop.
Has anyone seen this before or have suggestions on how to resolve the issue?