Comment 15 for bug 1972057

Verified via Ubuntu MATE Jammy VM by running the following after startup:

$ sudo apt update && sudo apt upgrade -y
$ sudo apt install caja-share

Opened Caja
In the caja file browser right clicked on Documents folder then selected "Sharing Options"
In the File Sharing menu, selected "Share this folder" then "Create Share"
The dialog replied with "'net usershare' returned error 255"
Closed Caja

Next I enabled proposed:

$ sudo su
# cat <<EOF >/etc/apt/sources.list.d/ubuntu-$(lsb_release -cs)-proposed.list
# Enable Ubuntu proposed archive
deb http://archive.ubuntu.com/ubuntu/ $(lsb_release -cs)-proposed restricted main multiverse universe
EOF
# exit
$ sudo apt update && sudo apt upgrade -y

Opened Caja
In the caja file browser right clicked on Documents then selected "Sharing Options"
In the File Sharing menu, selected "Share this folder" then "Create Share"
Dialog closed and share icon showed up successfully