diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a65beb4..38dd1863 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - added the ability to hide certificates in editbox in Global Setting (idea by Yeyixiao)
 - added Opening a program in several sandboxes at once [#4231](https://github.com/sandboxie-plus/Sandboxie/issues/4231)
 - added "Description" field inside the sandbox settings [#4243](https://github.com/sandboxie-plus/Sandboxie/issues/4243)
+- added "NotifyMsiInstaller=y" enabled by default to display message SBIE2194 when an MSI installer is run in a box without the recomended excemptions [#4330](https://github.com/sandboxie-plus/Sandboxie/issues/4330)
+  - SBIE2194: MSI installer requires 'MsiInstallerExemptions=y' option to be set in the ini to be able to work correctly, however this option weakens the isolation.
 
 ### Fixed
 - fixed Sign the .tmp file that gets dropped when installing or updating Sandboxie Plus [#2643](https://github.com/sandboxie-plus/Sandboxie/issues/2643)
diff --git a/Sandboxie/core/dll/custom.c b/Sandboxie/core/dll/custom.c
index a76d8ff8..3224ae66 100644
--- a/Sandboxie/core/dll/custom.c
+++ b/Sandboxie/core/dll/custom.c
@@ -1880,61 +1880,6 @@ _FX BOOLEAN Custom_OsppcDll(HMODULE module)
 // Custom_ProductID
 //---------------------------------------------------------------------------
 
-/*static wchar_t GetCharFromInt(int a) {
-	switch (a) {
-	case 0:
-		return L'0';
-		break;
-	case 1:
-		return L'1';
-		break;
-	case 2:
-		return L'2';
-		break;
-	case 3:
-		return L'3';
-		break;
-	case 4:
-		return L'4';
-		break;
-	case 5:
-		return L'5';
-		break;
-	case 6:
-		return L'6';
-		break;
-	case 7:
-		return L'7';
-		break;
-	case 8:
-		return L'8';
-		break;
-	case 9:
-		return L'9';
-		break;
-	}
-	return 0;
-}
-
-static int GetIntLen(DWORD n) {
-	int count = 0;
-	while (n != 0)
-	{
-		n = n / 10;
-		count++;
-	}
-	return count;
-}*/
-
-static unsigned long seed = 1;
-
-int my_rand(void)
-{
-	seed = (seed * 214013L
-		+ 2531011L) >> 16;
-	return((unsigned)seed & 0x7fff);
-}
-
 /*char* my_itoa(int num, char* str, int radix)
 {
 	char index[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
@@ -2026,11 +1971,10 @@ _FX BOOLEAN  Custom_ProductID(void)
 
 			RtlInitUnicodeString(&uni, L"ProductId");
 
-			seed = GetTickCount();
-			int chain1 = my_rand() % 10000 + 9999,
-				chain2 = my_rand() % 10000 + 9999,
-				chain3 = my_rand() % 10000 + 9999,
-				chain4 = my_rand() % 10000 + 9999
+			int chain1 = Dll_rand() % 10000 + 9999,
+				chain2 = Dll_rand() % 10000 + 9999,
+				chain3 = Dll_rand() % 10000 + 9999,
+				chain4 = Dll_rand() % 10000 + 9999
 				;
 			Sbie_snwprintf(tmp, 34, L"%05d-%05d-%05d-%05d", chain1, chain2, chain3, chain4);
 			
diff --git a/Sandboxie/core/dll/dllmain.c b/Sandboxie/core/dll/dllmain.c
index acd50513..03484483 100644
--- a/Sandboxie/core/dll/dllmain.c
+++ b/Sandboxie/core/dll/dllmain.c
@@ -886,10 +886,16 @@ _FX VOID Dll_Ordinal1(INJECT_DATA * inject)
         // msi installer requires COM to be sandboxed, else the installation will be done outside the sandbox
         //
 
-        if (Dll_ImageType == DLL_IMAGE_MSI_INSTALLER && SbieDll_IsOpenCOM()) {
+        if (Dll_ImageType == DLL_IMAGE_MSI_INSTALLER) {
 
-            SbieApi_Log(2196, NULL);
-            ExitProcess(0);
+            if (SbieDll_IsOpenCOM()) {
+                SbieApi_Log(2196, NULL);
+                ExitProcess(0);
+            }
+
+            if (!SbieApi_QueryConfBool(NULL, L"MsiInstallerExemptions", FALSE) && SbieApi_QueryConfBool(NULL, L"NotifyMsiInstaller", TRUE)) {
+                SbieApi_Log(2194, L"MsiInstallerExemptions=y");
+            }
         }
     }
     else
diff --git a/Sandboxie/msgs/Sbie-English-1033.txt b/Sandboxie/msgs/Sbie-English-1033.txt
index bf804213..a28e079a 100644
--- a/Sandboxie/msgs/Sbie-English-1033.txt
+++ b/Sandboxie/msgs/Sbie-English-1033.txt
@@ -420,7 +420,7 @@ SBIE2193 Make sure to delete the sandbox after completing the update process.
 .
 
 2194;pop;inf;01
-SBIE2194 MSI installer requires %2 option to be set in the ini, what however weakens the isolation.
+SBIE2194 MSI installer requires %2 option to be set in the ini to be able to work correctly, however this option weakens the isolation.
 .
 
 2195;pop;inf;01