Quick question for those of you who are more down the Pro path than I am at the moment. Background info is as follows:
- MS Server 2019
- ArcGIS Server 10.8.1 (current patches applied)
- Operating in a non-federated configuration (traditional ArcGIS Map Server)
Has anyone been successful using ExternalizeConnectionStrings.bat to update ArcGIS Pro published services in ArcGIS Server 10.8.1? I have zero issues when it comes to an MXD based service, but as soon as it hits a pro service it fails. Bellow highlighted items are the only services I have that were published via Pro. I believe the user is on 2.5 at a minimum there. Everything else was published using ArcGIS Desktop 10.7.1 and worked as expected.

The example above was just me checking the timing on the process, etc. No changes were actually made (saving that for the weekend).