From 2344c19e51da04d9459d8ac447f796dad03832d1 Mon Sep 17 00:00:00 2001
From: Travis Plunk <travis.plunk@microsoft.com>
Date: Tue, 3 Jan 2023 10:44:02 -0800
Subject: [PATCH] Fix support for nanoserver due to lack of AMSI

---
 .../security/SecuritySupport.cs                      | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/System.Management.Automation/security/SecuritySupport.cs b/src/System.Management.Automation/security/SecuritySupport.cs
index 16d6ca3afee..0892465804d 100644
--- a/src/System.Management.Automation/security/SecuritySupport.cs
+++ b/src/System.Management.Automation/security/SecuritySupport.cs
@@ -1338,7 +1338,17 @@ internal static class AmsiUtils
         static AmsiUtils()
         {
 #if !UNIX
-            s_amsiInitFailed = !CheckAmsiInit();
+            try 
+            {
+                s_amsiInitFailed = !CheckAmsiInit();
+            }
+            catch (DllNotFoundException)
+            {
+                PSEtwLog.LogAmsiUtilStateEvent("DllNotFoundException", $"{s_amsiContext}-{s_amsiSession}");
+                s_amsiInitFailed = true;
+                return;
+            }
+            
             PSEtwLog.LogAmsiUtilStateEvent($"init-{s_amsiInitFailed}", $"{s_amsiContext}-{s_amsiSession}");
 #endif
         }