I need a solution
The NetBackup 7 Compatibility List http://www.symantec.com/docs/TECH76648 (page 71) specifies that with Windows 8 the Java Admin Console and the Remote Admin Console are: "Supported with NetBackup 7.6 and later".
We installed 7.5 Java GUI and 7.5.0.7 patch on Windows 8.1 with no issues, and installed the 7.6 and 7.6.0.2 GUI (in a different folder) on the same machine. Both installed and ran side-by-side with no issues.
Has anyone experienced performance or stability issues with the 7.5 GUI on Windows 8 ? I wonder if it is actually compatible and 7.5 is just not fully "logo certified".