JDK-8210261 : Web Start cannot handle 'x86_64' in arch attribute
  • Type: Bug
  • Component: deploy
  • Sub-Component: webstart
  • Affected Version: 8
  • Priority: P4
  • Status: Resolved
  • Resolution: Won't Fix
  • Submitted: 2018-08-31
  • Updated: 2018-08-31
  • Resolved: 2018-08-31
Related Reports
Relates :  
When specifying 'arch' attribute in resources element of jnlp file, only 'amd64' will work "x86_64' will not work.

On 64 bit Windows, you can run with either 32 or 64 bit JRE, and you can filter the resources used by specifying the 'arch' attribute, but only specifying "arch='amd64'" will cause resources to only be used when running in 64 bit Archetecture
This problem is not new, easy work-around, not necessary to fix now.