We have a customer that is using an external ArcGIS Server (v11.1) print service (that we manage) in ArcGIS Online. This is added as a geoprocessing service with embedded credentials and has ben working fine for 18 months plus.
This morning (Mon 3rd Feb 2025) they are getting errors using the print service in their apps. I have checked the ArcGIS Server and it's up and the print service is responding ok. If I use the external URL of the print service directly (not the item with embedded credentials) then printing from an app works (after entering credentials), which proves the print service is not the issue.
I've also tried to create a new GP service item using the URL, which creates ok. However, when I try to add the resulting item URL (starting with utility.arcgis.com) to an app, then it fails. It also fails if I choose to select this as the default utility service for the organisation.
This all leads me to think that it's an issue with the ArcGIS utility service/proxy (utility.arcgis.com). I have raised with Esri support, but I'd be interested to know if others are experiencing the same issues with services that have embedded credentials (i.e. using utility.arcgis.com).