ArcGIS Portal 11.5 crashes when requiring an ArcGIS Pro Licence

[SimonReman2010]

Hello everyone,

We recently upgraded ArcGIS Enterprise to version 11.5.
As expected, ArcGIS Pro licenses are now managed directly through the portal (no more License Manager).

However, we are facing a recurring issue: when an ArcGIS Pro 3.5 client tries to obtain a license from the portal, the portal sometimes crashes and restarts 
The portal log shows:

The web server was found to be stopped. Re-starting it.

Has anyone experienced this issue or found a solution?

Best regards,

Simon

[SimonReman2010]

Hello,

Update of 10/07/2025

When I enable the log level to debug, I get the following error during this incident.

java.lang.RuntimeException: java.util.concurrent.TimeoutException at com.esri.arcgis.portal.util.CallableUtil.execute(CallableUtil.java:31) at com.esri.arcgis.portal.util.TomcatUtil.startServer(TomcatUtil.java:109) at com.esri.arcgis.portal.plugins.ProcessMonitor.c(ProcessMonitor.java:281) at com.esri.arcgis.portal.plugins.ProcessMonitor$d.run(ProcessMonitor$d.java:538) Caused by: java.util.concurrent.TimeoutException at java.base/java.util.concurrent.FutureTask.get(Unknown Source) at com.esri.arcgis.portal.util.CallableUtil.execute(CallableUtil.java:29) ... 3 more

This error also appears in https://support.esri.com/en-us/knowledge-base/error-could-not-start-the-web-server-java-util-concurr...

I'm in touch with Esri Belux Support.

I'll provide another update when I get more information.

Best,

Simon