After installing OpenSSH connecting to the host fails because sshd can't create the shell process running in user context

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest version
• Search the existing issues.

Steps to reproduce

1. Install the latest OpenSSH v9.1.0.0p1-Beta from https://github.com/PowerShell/Win32-OpenSSH/releases/download/v9.1.0.0p1-Beta/OpenSSH-Win64-v9.1.0.0.msi
2. Configure sshd
3. start sshd from services
4. connect to this host with ssh @localhost
5. watch the connection succeed, but then terminate after some time without giving access to the configured shell

Expected behavior

Connect and start PowerShell.exe, pwsh.exe or cmd.exe

Actual behavior

Connection succeeds, but then terminates, because no shell could be started.

Error details

Within sshd logs you'll find lines like:

debug3: mm_request_send: entering, type 13
Accepted password for adm-sct-muc from ::1 port 56232 ssh2
debug1: monitor_child_preauth: user adm-sct-muc authenticated by privileged process
debug3: mm_get_keystate: Waiting for new keys
debug3: mm_request_receive_expect: entering, type 26
debug3: mm_request_receive: entering
debug3: mm_get_keystate: GOT new keys
debug3: mm_auth_password: user authenticated [preauth]
debug3: user_specific_delay: user specific delay 0.000ms [preauth]
debug3: ensure_minimum_time_since: elapsed 84665.000ms, delaying 24818.373ms (requested 6.682ms) [preauth]
debug3: send packet: type 52 [preauth]
debug3: mm_request_send: entering, type 26 [preauth]
debug3: mm_send_keystate: Finished sending state [preauth]
debug3: ReadFileEx() ERROR:109, io:000001F315A90A50
debug3: read - no more data, io:000001F315A90A50
debug3: spawning "C:\\Program Files\\OpenSSH\\sshd.exe" -dddd -z as user
CreateProcessAsUserW failed error:1314
fork of unprivileged child failed
debug1: do_cleanup

sshd fails to spawn a child within the context of the user and as this user.

### Environment data

```PowerShell
> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      5.1.17763.3770
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.17763.3770
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

Version

v9.1.0.0p1-Beta

Visuals

No response