The error message "System.MissingMethodException" typically occurs on Self-Hosted Environments when launching play servers.
The cause for the error seen below is related to missing .NET updates
Error message when launching play server "System.MissingMethodException" Print
Modified on: Fri, 20 Feb, 2026 at 3:25 AM
Did you find it helpful? Yes No
Send feedbackSorry we couldn't be helpful. Help us improve this article with your feedback.