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Error 'Unsupported Major.Minor Version 52.0' When Loading Applets in P6 Web (Doc ID 2284298.1)

Last updated on AUGUST 14, 2019

Applies to:

Primavera P6 Enterprise Project Portfolio Management - Version to [Release 16.1 to 17.12]
Primavera P6 Enterprise Project Portfolio Management Cloud Service - Version to [Release 16.1 to 17.12]
Information in this document applies to any platform.


Users receive the following error when attempting to load applets in the P6 Web application:

UnsupportedClassVersionError: com/primavera/pvapplets/projects/ProjectApplet : Unsupported major.minor version 52.0


The issue can be reproduced at will with the following steps:

  1. Login to P6 Web.
  2. Select the Projects tab.
  3. Click Switch to Classic View.
  4. Observe reported error.


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