Windows 8/8.1 troubleshooting issue Need help with your Windows 8 or Windows 8.1 setup?
You should face no issues using an original Windows 8 version with the Win 8.1 product key alongside the G2A download.
You’d require an 8.1 ISO standard or purchase a Windows 8 key.
The downloader for Microsoft 8.1 is accessible online and should work without issues.