Exception occurred: java.util.ConcurrentModificationException is raised when editing issues

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Platform Notice: Server and Data Center Only - This article only applies to Atlassian products on the server and data center platforms.


When performing issue actions, for example, Edit Issue, an error is shown to the user:

Exception occurred: java.util.ConcurrentModificationException



  • You see the error message above
  • Your environment matches above


The Extension for Jira Service Desk app has a yet to be determined negative interaction with Jira. While it is enabled, in some situations the error above can occur.


  1. Disable the app
  2. If the problem goes away, contact the app vendor for assistance

Last modified on Jan 11, 2022

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