Ah, I found my own solution after a little digging.
A little background. My XO install was built from sources on Debian Bullseye.
Looking through the logs on XO when I attempted a file restore on a Windows machine I see these entries:
After googling that, I ran across this thread, which had the solution:
Windows file restores are working fine now.
@Rocky, rest easy. Your post did help someone in the future. 