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KB-1577 "Expected 256, was 257" exception regarding Appian engine security token prevents engine startup
- Revision #11
- on 1 Aug 2025 3:50 PM
Symptoms Appian engines fail to reach RUNNING state, PRIMARY mode, and the following exception is printed in the service_manager.log file (located at <APPIAN_HOME>...
KB-2346 WebApp Startup Delay Due to Analytics Propagation Stall
- Revision #12
- on 30 Jul 2025 1:40 PM
Symptoms In certain Appian environments—most commonly in Appian on Kubernetes (AoK) deployments, but also observed in classic installations—the Application Server startup...
KB-2242 "PKIX path building failed" error seen when sending emails in a self-managed Kubernetes install
- Revision #10
- on 29 Jul 2025 9:25 PM
Symptoms Sending emails over HTTPS fails with the following error in the webapp pod log: jakarta.mail.MessagingException: Could not convert socket to TLS; ... javax...
KB-2344 Information about the Microsoft SharePoint Server Vulnerability (CVE-2025-53770 and CVE-2025-53771)
- Revision #1
- on 24 Jul 2025 4:25 PM
On 19-Jul-2025, Microsoft announced active exploitation of two vulnerabilities against its on-premise Microsoft SharePoint Server software. Appian does not use on-premise...
KB-2236 FedRAMP / PCI / Protected B maintenance schedule
- Revision #9
- on 24 Jul 2025 5:29 AM
Purpose Any patch released by Appian or a third party must be deployed to FedRAMP/PCI/Protected B- compliant sites within 30 calendar days of the patch being generally...