diff --git a/PowerEditor/installer/nativeLang/english.xml b/PowerEditor/installer/nativeLang/english.xml
index 156c08854..b63adc626 100644
--- a/PowerEditor/installer/nativeLang/english.xml
+++ b/PowerEditor/installer/nativeLang/english.xml
@@ -1601,6 +1601,7 @@ If you require the backward regex searching feature, consult the user manual for
 			<FindAutoChangeOfInSelectionWarning title="Search warning" message="The &quot;In selection&quot; checkbox state has been automatically modified.
 Please verify the search condition before performing the action."/> <!-- HowToReproduce: https://github.com/notepad-plus-plus/notepad-plus-plus/issues/14897#issuecomment-2564316224 -->
 			<Need2Restart2ShowMenuShortcuts title="Notepad++ needs to be restarted" message="Notepad++ needs to be restarted to show right menu shortcuts."/>
+			<NoAdminRight2ChangeReadOnlyFileAttribute title="Changing file read-only attributes failed" message="Please run Notepad++ as administrator to change the file attributes."/>
 		</MessageBox>
 		<ClipboardHistory>
 			<PanelTitle name="Clipboard History"/>
diff --git a/PowerEditor/installer/nativeLang/english_customizable.xml b/PowerEditor/installer/nativeLang/english_customizable.xml
index 07271a392..655b637a8 100644
--- a/PowerEditor/installer/nativeLang/english_customizable.xml
+++ b/PowerEditor/installer/nativeLang/english_customizable.xml
@@ -1601,6 +1601,7 @@ If you require the backward regex searching feature, consult the user manual for
 			<FindAutoChangeOfInSelectionWarning title="Search warning" message="The &quot;In selection&quot; checkbox state has been automatically modified.
 Please verify the search condition before performing the action."/> <!-- HowToReproduce: https://github.com/notepad-plus-plus/notepad-plus-plus/issues/14897#issuecomment-2564316224 -->
 			<Need2Restart2ShowMenuShortcuts title="Notepad++ needs to be restarted" message="Notepad++ needs to be restarted to show right menu shortcuts."/>
+			<NoAdminRight2ChangeReadOnlyFileAttribute title="Changing file read-only attributes failed" message="Please run Notepad++ as administrator to change the file attributes."/>
 		</MessageBox>
 		<ClipboardHistory>
 			<PanelTitle name="Clipboard History"/>
diff --git a/PowerEditor/installer/nativeLang/french.xml b/PowerEditor/installer/nativeLang/french.xml
index dae9a6210..6e060fed0 100644
--- a/PowerEditor/installer/nativeLang/french.xml
+++ b/PowerEditor/installer/nativeLang/french.xml
@@ -1596,6 +1596,7 @@ Si vous avez besoin de la fonction de recherche d’expression régulière inver
 			<FindAutoChangeOfInSelectionWarning title="Avertissement de recherche" message="L'état de laa case à cocher &quot;Dans la sélection&quot; a été automatiquement modifié.
 Veuillez vérifier la condition de recherche avant de procéder à l'action."/> <!-- HowToReproduce: https://github.com/notepad-plus-plus/notepad-plus-plus/issues/14897#issuecomment-2564316224 -->
 			<Need2Restart2ShowMenuShortcuts title="Redémarrer Notepad++" message="Vous avez besoins de redémarrer Notepad++ afin d'afficher menu ＋ ▼ ✕ "/>
+			<NoAdminRight2ChangeReadOnlyFileAttribute title="Impossible de modifier l'attribut lecture seule" message="Veuillez lancer Notepad++ en mode « Administrateur » pour modifier cet attribut du fichier."/>
 		</MessageBox>
 		<ClipboardHistory>
 			<PanelTitle name="Historique du presse-papier"/>
diff --git a/PowerEditor/installer/nativeLang/taiwaneseMandarin.xml b/PowerEditor/installer/nativeLang/taiwaneseMandarin.xml
index 798cb0eb3..291972749 100644
--- a/PowerEditor/installer/nativeLang/taiwaneseMandarin.xml
+++ b/PowerEditor/installer/nativeLang/taiwaneseMandarin.xml
@@ -408,8 +408,8 @@
 				<Item CMDID="41016" name="移至回收筒"/>
 				<Item CMDID="41014" name="重新載入"/>
 				<Item CMDID="41010" name="列印"/>
-				<Item CMDID="42028" name="唯讀"/>
-				<Item CMDID="42033" name="取消唯讀"/>
+				<Item CMDID="42028" name="在 Notepad++ 中設為唯讀"/>
+				<Item CMDID="42033" name="檔案系統權限唯讀"/>
 				<Item CMDID="2" name="複製到剪貼簿"/>
 				<Item CMDID="42029" name="複製完整路徑檔名"/>
 				<Item CMDID="42030" name="複製檔名"/>
@@ -1470,6 +1470,7 @@
 			<RTLvsDirectWrite title="無法執行「文字由右至左」指令" message="「文字由右至左」指令與「直接寫入」模式不相容。 請在偏好設定對話框的「其他」中停用「直接寫入」模式，然後重新​​啟動 Notepad++ 。"/>
 			<FileMemoryAllocationFailed title="例外狀況：檔案記憶體分配失敗" message="可能沒有足夠的連續可用記憶體供 Notepad++ 載入檔案。"/>
 			<Need2Restart2ShowMenuShortcuts title="重新啟動 Notepad++" message="Notepad++ 需要重新啟動才能顯示選單右邊捷徑。"/>
+			<NoAdminRight2ChangeReadOnlyFileAttribute title="更改檔案維讀屬性失敗" message="請在系統管理員模式下重新啟動 Notepad++ 以使用此功能。"/>
 		</MessageBox>
 		<ClipboardHistory>
 			<PanelTitle name="剪貼簿記錄"/>
diff --git a/PowerEditor/src/NppCommands.cpp b/PowerEditor/src/NppCommands.cpp
index 5aaffe055..d03b44f9b 100644
--- a/PowerEditor/src/NppCommands.cpp
+++ b/PowerEditor/src/NppCommands.cpp
@@ -2110,7 +2110,26 @@ void Notepad_plus::command(int id)
 			Buffer* buf = _pEditView->getCurrentBuffer();
 			bool isSysReadOnly = false;
 			if (toggleReadOnlyFlagFromFileAttributes(buf->getFullPathName(), isSysReadOnly))
+			{
 				buf->setFileReadOnly(isSysReadOnly);
+			}
+			else
+			{
+				if (_isAdministrator)
+				{
+					MessageBox(_pPublicInterface->getHSelf(), GetLastErrorAsString(GetLastError()).c_str(),	L"Changing file read-only attributes failed", MB_OK | MB_ICONWARNING);
+				}
+				else
+				{
+					// Not in admin mode, and file might be protected. So we can't change the file attributes.
+					_nativeLangSpeaker.messageBox("NoAdminRight2ChangeReadOnlyFileAttribute",
+						_pPublicInterface->getHSelf(),
+						L"Please run Notepad++ as administrator to change the file attributes.",
+						L"Changing file read-only attributes failed",
+						MB_OK | MB_ICONWARNING);
+				}
+
+			}
 		}
 		break;
 
diff --git a/PowerEditor/src/WinControls/Preference/preference.rc b/PowerEditor/src/WinControls/Preference/preference.rc
index 175415cd8..573b308e6 100644
--- a/PowerEditor/src/WinControls/Preference/preference.rc
+++ b/PowerEditor/src/WinControls/Preference/preference.rc
@@ -264,8 +264,8 @@ BEGIN
     COMBOBOX        IDC_COMBO_OTHERCP,257,125,100,140,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
     RTEXT           "Default language:",IDC_DEFAULTLANG_STATIC,16,125,77,8
     COMBOBOX        IDC_COMBO_DEFAULTLANG,98,123,100,140,CBS_DROPDOWNLIST | CBS_SORT | WS_VSCROLL | WS_TABSTOP
-    CONTROL         "Always open a new document in addition at startup",IDC_CHECK_ADDNEWDOCONSTARTUP,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,23,152,250,10
-    CONTROL         "Use the first line of document as untitled tab name",IDC_CHECK_USECONTENTASTABNAME,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,23,165,250,10
+    CONTROL         "Always open a new document in addition at startup",IDC_CHECK_ADDNEWDOCONSTARTUP,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,23,152,270,10
+    CONTROL         "Use the first line of document as untitled tab name",IDC_CHECK_USECONTENTASTABNAME,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,23,165,270,10
 END