From 920514f9c07b651d4398926bd74f046694d2e977 Mon Sep 17 00:00:00 2001
From: nurfed <bryandehouwer@hotmail.com>
Date: Sat, 23 Dec 2023 22:45:41 +0100
Subject: [PATCH] Check if ResolveAccountName returns a value

---
 src/CommonLib/Processors/GPOLocalGroupProcessor.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/CommonLib/Processors/GPOLocalGroupProcessor.cs b/src/CommonLib/Processors/GPOLocalGroupProcessor.cs
index 419a3efb..fa7041be 100644
--- a/src/CommonLib/Processors/GPOLocalGroupProcessor.cs
+++ b/src/CommonLib/Processors/GPOLocalGroupProcessor.cs
@@ -531,6 +531,11 @@ internal IEnumerable<GroupAction> ProcessGPOXmlFile(string basePath, string gpoD
                                     var domain = s[0];
 
                                     var res = _utils.ResolveAccountName(name, domain);
+                                    if (res == null)
+                                    {
+                                        _log.LogWarning("Failed to resolve member {memberName}", memberName);
+                                        continue;
+                                    }
                                     ga.Target = GroupActionTarget.LocalGroup;
                                     ga.TargetSid = res.ObjectIdentifier;
                                     ga.TargetType = res.ObjectType;
@@ -540,6 +545,11 @@ internal IEnumerable<GroupAction> ProcessGPOXmlFile(string basePath, string gpoD
                                 else
                                 {
                                     var res = _utils.ResolveAccountName(memberName, gpoDomain);
+                                    if (res == null)
+                                    {
+                                        _log.LogWarning("Failed to resolve member {memberName}", memberName);
+                                        continue;
+                                    }
                                     ga.Target = GroupActionTarget.LocalGroup;
                                     ga.TargetSid = res.ObjectIdentifier;
                                     ga.TargetType = res.ObjectType;