Deployment Taking Long Time After Upgrading to Appian 25.2 — Unable to Cancel In-Progress Deployment

Hello All,

After upgrading to Appian 25.2, we noticed that deployments triggered via the deployment-management/v2/deployments API are taking significantly longer to complete. Previously, the same deployment process would finish in around 8 minutes, but now it takes over 3 hours.

From the Tomcat logs, we observed errors related to constant updates during the deployment process, which may be contributing to the delay.

We also attempted to stop the in-progress deployment by restarting application servers and engines, but the deployment continues to remain in-progress and is not cancelled.

We have already raised a support ticket with Appian, but in the meantime, checking with the community:

• Has anyone else encountered similar issues after upgrading to Appian 25.2?

• Is there any other way to cancel or forcefully terminate an in-progress deployment initiated via the API?

Thank You,

Sneha.