Okay so you deployed XOA, the turnkey VM with XO already installed in it.
Are you sure you do not have an IP conflict? Make sure XOA IP is different than the host.
I had the same problem, I had to run the XenClean script and do a fresh install of 9.4.1 which resolved the issue.
https://github.com/xcp-ng/win-pv-drivers/releases