Not sure if it's officially supported, but I've been using 8.1 since it was released without any issues at all. Only started having problems when I applied this service pack.
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Thursday, May 8, 2014 2:46 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: iSeries Access service pack SI50567
Are you sure Win 8.1 is supported?
Win 8.0 for sure.
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Bob Cagle
Sent: Thursday, May 08, 2014 3:20 PM
To: Midrange Systems Technical Discussion
Subject: iSeries Access service pack SI50567
Has anyone else had issues with this service pack? I just installed it on my second Windows 8.1 machine and it has a weird problem where the emulator screen disappears until the next input.
Not sure of a workaround - is there a way to uninstall a service pack?