diff --git a/PowerEditor/src/MISC/Common/verifySignedfile.cpp b/PowerEditor/src/MISC/Common/verifySignedfile.cpp
index 5e4107bac..2553d9718 100644
--- a/PowerEditor/src/MISC/Common/verifySignedfile.cpp
+++ b/PowerEditor/src/MISC/Common/verifySignedfile.cpp
@@ -46,7 +46,8 @@ bool VerifySignedLibrary(const wstring& filepath,
                          const wstring& cert_subject,
                          const wstring& cert_display_name,
                          bool doCheckRevocation,
-                         bool doCheckChainOfTrust)
+                         bool doCheckChainOfTrust,
+                         bool displayErrorMessage)
 {
 	wstring display_name;
 	wstring key_id_hex;
@@ -228,15 +229,19 @@ bool VerifySignedLibrary(const wstring& filepath,
 		display_name = display_name_buffer.get();
 
 	} catch (const wstring& s) {
-		::MessageBox(NULL, s.c_str(), TEXT("DLL signature verification failed"), MB_ICONERROR);
+		if (displayErrorMessage)
+			::MessageBox(NULL, s.c_str(), TEXT("DLL signature verification failed"), MB_ICONERROR);
 		OutputDebugString(TEXT("VerifyLibrary: error while getting certificate informations\n"));
 		status = false;
 	} catch (...) {
 		// Unknown error
 		OutputDebugString(TEXT("VerifyLibrary: error while getting certificate informations\n"));
-		wstring errMsg(TEXT("Unknown exception occurred. "));
-		errMsg += GetLastErrorAsString(GetLastError());
-		::MessageBox(NULL, errMsg.c_str(), TEXT("DLL signature verification failed"), MB_ICONERROR);
+		if (displayErrorMessage)
+		{
+			wstring errMsg(TEXT("Unknown exception occurred. "));
+			errMsg += GetLastErrorAsString(GetLastError());
+			::MessageBox(NULL, errMsg.c_str(), TEXT("DLL signature verification failed"), MB_ICONERROR);
+		}
 		status = false;
 	}
 
diff --git a/PowerEditor/src/MISC/Common/verifySignedfile.h b/PowerEditor/src/MISC/Common/verifySignedfile.h
index d9d10d042..74db47eee 100644
--- a/PowerEditor/src/MISC/Common/verifySignedfile.h
+++ b/PowerEditor/src/MISC/Common/verifySignedfile.h
@@ -60,9 +60,14 @@
 
 #include <string>
 
+#define NPP_COMPONENT_SIGNER_DISPLAY_NAME TEXT("Notepad++")
+#define NPP_COMPONENT_SIGNER_SUBJECT TEXT("C=FR, S=Ile-de-France, L=Saint Cloud, O=\"Notepad++\", CN=\"Notepad++\"")
+#define NPP_COMPONENT_SIGNER_KEY_ID TEXT("42C4C5846BB675C74E2B2C90C69AB44366401093")
+
 bool VerifySignedLibrary(const std::wstring& filepath,
                          const std::wstring& key_id_hex,
                          const std::wstring& cert_subject,
                          const std::wstring& display_name,
                          bool doCheckRevocation,
-                         bool doCheckChainOfTrust);
+                         bool doCheckChainOfTrust,
+                         bool displayErrorMessage = true);
diff --git a/PowerEditor/src/MISC/PluginsManager/PluginsManager.cpp b/PowerEditor/src/MISC/PluginsManager/PluginsManager.cpp
index 6eb878087..7ebb69120 100644
--- a/PowerEditor/src/MISC/PluginsManager/PluginsManager.cpp
+++ b/PowerEditor/src/MISC/PluginsManager/PluginsManager.cpp
@@ -500,7 +500,7 @@ void PluginsManager::addInMenuFromPMIndex(int i)
 
 HMENU PluginsManager::setMenu(HMENU hMenu, const TCHAR *menuName, bool enablePluginAdmin)
 {
-	if (hasPlugins())
+	if (hasPlugins() || enablePluginAdmin)
 	{
 		const TCHAR *nom_menu = (menuName && menuName[0])?menuName:TEXT("&Plugins");
 		size_t nbPlugin = _pluginInfos.size();
diff --git a/PowerEditor/src/Notepad_plus.cpp b/PowerEditor/src/Notepad_plus.cpp
index 2c842f911..1dc606937 100644
--- a/PowerEditor/src/Notepad_plus.cpp
+++ b/PowerEditor/src/Notepad_plus.cpp
@@ -536,7 +536,7 @@ LRESULT Notepad_plus::init(HWND hwnd)
 	}
 
 	//Plugin menu
-	bool enablePluginAdmin = _pluginsAdminDlg.listExist();
+	bool enablePluginAdmin = _pluginsAdminDlg.isListValide();
 	_pluginsAdminDlg.setPluginsManager(&_pluginsManager);
 	_pluginsManager.setMenu(_mainMenuHandle, NULL, enablePluginAdmin);
 
diff --git a/PowerEditor/src/ScitillaComponent/ScintillaEditView.cpp b/PowerEditor/src/ScitillaComponent/ScintillaEditView.cpp
index 3baa5d17b..46586a1d9 100644
--- a/PowerEditor/src/ScitillaComponent/ScintillaEditView.cpp
+++ b/PowerEditor/src/ScitillaComponent/ScintillaEditView.cpp
@@ -173,10 +173,6 @@ LanguageName ScintillaEditView::langNames[L_EXTERNAL+1] = {
 //const int MASK_GREEN = 0x00FF00;
 //const int MASK_BLUE  = 0x0000FF;
 
-#define SCINTILLA_SIGNER_DISPLAY_NAME TEXT("Notepad++")
-#define SCINTILLA_SIGNER_SUBJECT TEXT("C=FR, S=Ile-de-France, L=Saint Cloud, O=\"Notepad++\", CN=\"Notepad++\"")
-#define SCINTILLA_SIGNER_KEY_ID TEXT("42C4C5846BB675C74E2B2C90C69AB44366401093")
-
 
 int getNbDigits(int aNum, int base)
 {
@@ -210,7 +206,7 @@ HMODULE loadSciLexerDll()
 	// This is helpful for developers to skip signature checking
 	// while analyzing issue or modifying the lexer dll
 #ifndef _DEBUG
-	bool isOK = VerifySignedLibrary(sciLexerPath, SCINTILLA_SIGNER_KEY_ID, SCINTILLA_SIGNER_SUBJECT, SCINTILLA_SIGNER_DISPLAY_NAME, false, false);
+	bool isOK = VerifySignedLibrary(sciLexerPath, NPP_COMPONENT_SIGNER_KEY_ID, NPP_COMPONENT_SIGNER_SUBJECT, NPP_COMPONENT_SIGNER_DISPLAY_NAME, false, false);
 
 	if (!isOK)
 	{
diff --git a/PowerEditor/src/WinControls/PluginsAdmin/pluginsAdmin.cpp b/PowerEditor/src/WinControls/PluginsAdmin/pluginsAdmin.cpp
index 4a2467a15..5fef02b92 100644
--- a/PowerEditor/src/WinControls/PluginsAdmin/pluginsAdmin.cpp
+++ b/PowerEditor/src/WinControls/PluginsAdmin/pluginsAdmin.cpp
@@ -40,6 +40,7 @@
 #include "Processus.h"
 #include "PluginsManager.h"
 #include "md5.h"
+#include "verifySignedFile.h"
 
 using namespace std;
 using nlohmann::json;
@@ -582,55 +583,45 @@ PluginUpdateInfo::PluginUpdateInfo(const generic_string& fullFilePath, const gen
 
 typedef const char * (__cdecl * PFUNCGETPLUGINLIST)();
 
-bool PluginsAdminDlg::listExist()
-{
-#ifdef DEBUG // if not debug, then it's release
 
-	// load from nppPluginList.json instead of nppPluginList.dll
-	generic_string nppPluginListPath = TEXT("C:\\tmp\\nppPluginList.json");
+bool PluginsAdminDlg::isListValide()
+{
+	if (!::PathFileExists(NPP_PLUGIN_LIST_PATH))
+	{
+		return false;
+	}
+
+#ifdef DEBUG // if not debug, then it's release
+	
+	return true;
 
 #else //RELEASE
 
-#ifdef _WIN64
-	generic_string nppPluginListPath = TEXT("C:\\sources\\nppPluginList\\vcxproj\\x64\\Debug\\nppPluginList.dll");
-#else
-	generic_string nppPluginListPath = TEXT("C:\\sources\\nppPluginList\\vcxproj\\Debug\\nppPluginList.dll");
-#endif
+	// check the signature on default location : %APPDATA%\Notepad++\plugins\config\pl\nppPluginList.dll or NPP_INST_DIR\plugins\config\pl\nppPluginList.dll
+	
+	bool isOK = VerifySignedLibrary(NPP_PLUGIN_LIST_PATH, NPP_COMPONENT_SIGNER_KEY_ID, NPP_COMPONENT_SIGNER_SUBJECT, NPP_COMPONENT_SIGNER_DISPLAY_NAME, false, false, false);
 
+	return isOK;
 #endif
-	return ::PathFileExists(nppPluginListPath.c_str()) == TRUE;
 }
 
 bool PluginsAdminDlg::updateListAndLoadFromJson()
 {
 	try {
+		if (!isListValide())
+			return false;
+
 		json j;
 
 #ifdef DEBUG // if not debug, then it's release
 
 		// load from nppPluginList.json instead of nppPluginList.dll
-		generic_string nppPluginListJsonPath = TEXT("C:\\tmp\\nppPluginList.json");
-
-		if (!::PathFileExists(nppPluginListJsonPath.c_str()))
-		{
-			::MessageBox(NULL, TEXT("The file doesn't exist"), nppPluginListJsonPath.c_str(), MB_OK);
-			return false;
-		}
-
-		ifstream nppPluginListJson(nppPluginListJsonPath);
+		ifstream nppPluginListJson(NPP_PLUGIN_LIST_PATH);
 		nppPluginListJson >> j;
 
 #else //RELEASE
 
-#ifdef _WIN64
-		generic_string nppPluginListDllPath = TEXT("C:\\sources\\nppPluginList\\vcxproj\\x64\\Debug\\nppPluginList.dll");
-#else
-		generic_string nppPluginListDllPath = TEXT("C:\\sources\\nppPluginList\\vcxproj\\Debug\\nppPluginList.dll");
-#endif
-
-		// check the signature on default location : %APPDATA%\Notepad++\plugins\config\pl\nppPluginList.dll or NPP_INST_DIR\plugins\config\pl\nppPluginList.dll
-
-		HINSTANCE hLib = ::LoadLibrary(nppPluginListDllPath.c_str());
+		HINSTANCE hLib = ::LoadLibrary(NPP_PLUGIN_LIST_PATH);
 		if (!hLib)
 		{
 			// Error treatment
diff --git a/PowerEditor/src/WinControls/PluginsAdmin/pluginsAdmin.h b/PowerEditor/src/WinControls/PluginsAdmin/pluginsAdmin.h
index c0b90d3a4..9978ff8ab 100644
--- a/PowerEditor/src/WinControls/PluginsAdmin/pluginsAdmin.h
+++ b/PowerEditor/src/WinControls/PluginsAdmin/pluginsAdmin.h
@@ -28,6 +28,21 @@
 
 #pragma once
 
+#ifdef DEBUG // if not debug, then it's release
+
+// load from nppPluginList.json instead of nppPluginList.dll
+#define NPP_PLUGIN_LIST_PATH TEXT("C:\\tmp\\nppPluginList.json")
+
+#else //RELEASE
+
+#ifdef _WIN64
+#define NPP_PLUGIN_LIST_PATH TEXT("C:\\sources\\nppPluginList\\vcxproj\\x64\\Debug\\nppPluginList.dll")
+#else
+#define NPP_PLUGIN_LIST_PATH TEXT("C:\\sources\\nppPluginList\\vcxproj\\Debug\\nppPluginList.dll")
+#endif
+
+#endif
+
 #include "StaticDialog.h"
 #include "pluginsAdminRes.h"
 #include "TabBar.h"
@@ -148,7 +163,7 @@ public :
 	    display();
     };
 
-	bool listExist();
+	bool isListValide();
 
 	void switchDialog(int indexToSwitch);
 	void setPluginsManager(PluginsManager *pluginsManager) { _pPluginsManager = pluginsManager; };