让FF14弹90002错误的脚本，使用前先使用管理员权限的powershell运行`set-executionpolicy remotesigned`，并同意。右键选择“使用 Powershell”运行，即可让FF14弹出90002错误，再运行一次就可以恢复正常。

FF14_90002.ps1

# Add NetFirewallRule for FF14
# @author koukuko
if (!([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) { 
	Start-Process powershell.exe "-NoProfile -ExecutionPolicy Bypass -File `"$PSCommandPath`"" -Verb RunAs;
	exit;
}

Add-Type -AssemblyName PresentationCore,PresentationFramework;

# check rule exist
$RuleDisplayName = "FF14_90002";
$Rule = Get-NetFirewallRule -DisplayName $RuleDisplayName 2> $null;
if ($Rule) {
	Remove-NetFirewallRule -DisplayName $RuleDisplayName;
	[System.Windows.MessageBox]::Show('<Final Fantasy XIV> block rule has been deleted.');
	exit;
}

# check process exist
$FF14ProcessName = "ffxiv";
$FF14Process = Get-Process $FF14ProcessName -ErrorAction SilentlyContinue;
if (!$FF14Process) {
	$FF14ProcessName = "ffxiv_dx11";
	$FF14Process = Get-Process $FF14ProcessName -ErrorAction SilentlyContinue;
}

# process not found
if (!$FF14Process) {
	[System.Windows.MessageBox]::Show('Please run the script after launching <Final Fantasy XIV>.');
	exit;
}

$FF14Path = $FF14Process | Select-Object -ExpandProperty Path;
New-NetFirewallRule -DisplayName $RuleDisplayName -Direction Outbound -Program $FF14Path -Action Block;
[System.Windows.MessageBox]::Show('<Final Fantasy XIV> has been blocked.');