I was trying to retrieve OS Data from the getVirtualMachineVMImagesOperations using the following way.
ComputeManagementClient computeManagementClient = ComputeManagementService.create(config);
System.out.println("OS Type"+computeManagementClient.getVirtualMachineVMImagesOperations().getDetails("WindowsRemoteServer").getOSDiskConfiguration().getOperatingSystem());
and I got the error - "ForbiddenError: This operation is not allowed for this subscription."
Exception in thread "main" com.microsoft.windowsazure.exception.ServiceException: ForbiddenError: This operation is not allowed for this subscription.
at com.microsoft.windowsazure.exception.ServiceException.createFromXml(ServiceException.java:208)
at com.microsoft.windowsazure.management.compute.VirtualMachineVMImageOperationsImpl.getDetails(VirtualMachineVMImageOperationsImpl.java:1115)
at com.microsoft.azure.auth.Program.main(Program.java:63)
Looks like it is some kind of permission error. Please share your ideas to overcome this error.