Since the June 25, 2025 AGO update we can no longer export from our Enterprise services published to ArcGIS Server 10.9.1. These were working prior to the upgrade. They are not secured services, we've confirmed in the settings they are all enabled to allow Export, and I confirmed successful export from the service in ArcGIS Pro.
ArcGIS Online hosted layers still export just fine.
Our services are still version 10.9.1. I have a ticket open with Esri support but trying to find a path forward for our org as quickly as possible. I am curious if anyone here using 11.x is experiencing the same issue or not?

AGO hosted layer:

Enterprise service:
