mount.exe in powershell service not mounting NFS for the user, only current process

Question

I'm using winsw to run a powershell 7 service with user credentials, in order to automatically mount an NFS volume. I can verify the service is running as that user since $env:UserName shows up correctly in the log.

Strangely, when the service runs this command:

mount.exe -o anon,nolock,hard 10.1.132.244:/rendering.dev.firehawkvfx.com X:

The service script can see the contents of the mounted path and that works, but the user in the windows UI session cannot, and the mount doesn't arrive in windows explorer at all. It appears the mount only exists for the process. This must have something to do with the way processes are isolated in windows is my guess.

There are a few components involved in doing this, but at the risk of being verbose the winsw service looks like this:

<service>
  <id>myservice</id>
  <name>MyService</name>
  <description>This service updates Deadline Certificates with Firehawk.</description>
  <serviceaccount>
    <username>.\REPLACE_WITH_DEADLINE_USER_NAME</username>
    <password>REPLACE_WITH_DEADLINE_USER_PASS</password>
    <allowservicelogon>true</allowservicelogon>
  </serviceaccount>
  <env name="FH_DEADLINE_CERTS_HOME" value="%BASE%"/>
  <executable>C:\Program Files\PowerShell\7\pwsh.exe</executable>
  <startarguments>-NoLogo -ExecutionPolicy Bypass -File c:\AppData\myservice.ps1</startarguments>
  <log mode="roll"></log>
</service>

and myservice.ps1 wrapper that runs the NFS mount.exe command (in aws-auth-deadline-pwsh-cert.ps1) looks like this:

#Requires -Version 7.0

Write-Host "Start Service"

# $ErrorActionPreference = "Stop"

function Main {
    $Timer = New-Object Timers.Timer
    $Timer.Interval = 10000
    $Timer.Enabled = $True
    $Timer.AutoReset = $True
    $objectEventArgs = @{
        InputObject      = $Timer
        EventName        = 'Elapsed'
        SourceIdentifier = 'myservicejob'
        Action           = {
            try {
                $resourcetier = "dev"
                Write-Host "Run aws-auth-deadline-cert`nCurent user: $env:UserName"
                Set-strictmode -version latest
                if (Test-Path -Path C:\AppData\myservice-config.ps1) {
                    . C:\AppData\myservice-config.ps1
                    C:\AppData\aws-auth-deadline-pwsh-cert.ps1 -resourcetier $resourcetier -deadline_user_name $deadline_user_name -aws_region $aws_region -aws_access_key $aws_access_key -aws_secret_key $aws_secret_key
                }
                else {
                    Write-Warning "C:\AppData\myservice-config.ps1 does not exist.  Install the service again and do not use the -skip_configure_aws argument"
                }
                Write-Host "Finished running aws-auth-deadline-cert"
            }
            catch {
                Write-Warning "Error in service Action{} block"
                Write-Warning "Message: $_"
                exit(1)
            }
        }
    }
    $Job = Register-ObjectEvent @objectEventArgs

    Wait-Event
}

try {
    Main
}
catch {
    Write-Warning "Error running Main in: $PSCommandPath"
    exit(1)
}

In case its of interest, I maintain this work ongoing at this github repo - https://github.com/firehawkvfx/firehawk-auth-scripts