When attempting to publish a scene service from ArcGIS Pro, publishing may succeed while the scene cache status reports showing "Failed" or "Unknown".
The following error is returned in the ArcGIS Server logs:
"ERROR 001784: Unable to connect to the database used for scene caches (unauthorized)."
Initially, the scene caching tools use an internet URL to connect to the scene cache database. In this case, internet policies apply.
If the internet connection fails, the tools attempt to connect using an intranet URL, in which case intranet policies apply. To verify that the URLs used by the tools are correctly set up to access the scene cache database, confirm that the ArcGIS Data Store host names are correct, and update cookie policies on the ArcGIS for Server machines.
data > items > nosqlDatabases > /nosqlDatabases/AGSDataStore_nosqldb_ <database name> > REST
Additionally, add the URL of the unqualified host name as a trusted site, for example: 'datastore'.