Full PowerShell script (Run as Administrator):

# Set the NFS share variables:
$NFSServer = "\\server\mnt\raid\NFS"
$DriveLetter = "Z:"

# Enable NFS Client feature
Enable-WindowsOptionalFeature -FeatureName ServicesForNFS-ClientOnly, ClientForNFS-Infrastructure -Online -NoRestart -ErrorAction SilentlyContinue

# Mount anonymously
mount -o anon $NFSServer $DriveLetter

# Get mount info and parse UID/GID
$mountOutput = mount
$mountInfo = $mountOutput | Where-Object { $_ -match $DriveLetter.TrimEnd(':') }

if ($mountInfo) {
    # Parse UID from mount output (format: UID=xxxx)
    if ($mountInfo -match 'UID[=:]?\s*(-?\d+)') {
        $UID = [int]$Matches[1]
    }
    
    # Parse GID from mount output (format: GID=xxxx)
    if ($mountInfo -match 'GID[=:]?\s*(-?\d+)') {
        $GID = [int]$Matches[1]
    }
    
    Write-Host "Found UID: $UID, GID: $GID"
    
    # Set registry values
    $regPath = "HKLM:\SOFTWARE\Microsoft\ClientForNFS\CurrentVersion\Default"
    
    # Create path if it doesn't exist
    if (-not (Test-Path $regPath)) {
        New-Item -Path $regPath -Force | Out-Null
    }
    
    Set-ItemProperty -Path $regPath -Name "AnonymousUid" -Value $UID -Type DWord
    Set-ItemProperty -Path $regPath -Name "AnonymousGid" -Value $GID -Type DWord
    
    Write-Host "Registry values set successfully"
    
    # Restart NFS client services
    Write-Host "Restarting NFS client services..."
    Stop-Service nfsclnt -Force -ErrorAction SilentlyContinue
    Stop-Service nfsrdr -Force -ErrorAction SilentlyContinue
    Start-Service nfsrdr
    Start-Service nfsclnt
    
    Write-Host "Done! NFS client configured with UID=$UID and GID=$GID"
}
else {
    Write-Warning "Could not find mount information for $DriveLetter"
    Write-Host "Mount output was:"
    $mountOutput
}

PowerShell:

Enable-WindowsOptionalFeature -FeatureName ServicesForNFS-ClientOnly, ClientForNFS-Infrastructure -Online -NoRestart

Or enable NFS client using: Control Panel > Turn Windows features on or off > Services for NFS (complete)

mount -o anon \\server\mnt\raid\NFS Z:

Find UID and GID to enable write permissions:

mount

Create DWORD (32-bit) and set UID and GID as value:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ClientForNFS\CurrentVersion\Default
AnonymousUid
AnonymousGid

Restart NFS client without having to restart Windows.

net stop nfsclnt
net stop nfsrdr
net start nfsrdr 
net start nfsclnt