diff --git a/CHANGELOG.md b/CHANGELOG.md
index ecc94631..fb48720a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - added Exclude specific boxes from 'Terminate all processes' [#3108](https://github.com/sandboxie-plus/Sandboxie/issues/3108)
   - Note: press the panic button hot key 3 times with less then 1 second between clicks to Terminate All with NO exceptions
 - added Customizable global hotkey that toggles the state of "pause forced programs" [#2441](https://github.com/sandboxie-plus/Sandboxie/issues/2441)
+- added Warn or prevent broad "forced folder" settings [#650](https://github.com/sandboxie-plus/Sandboxie/issues/650)
 
 ### Changed
 - improved suspend process ahndling [#3375](https://github.com/sandboxie-plus/Sandboxie/issues/3375)
diff --git a/SandboxiePlus/SandMan/Windows/OptionsForce.cpp b/SandboxiePlus/SandMan/Windows/OptionsForce.cpp
index f9e82256..06bc3f9f 100644
--- a/SandboxiePlus/SandMan/Windows/OptionsForce.cpp
+++ b/SandboxiePlus/SandMan/Windows/OptionsForce.cpp
@@ -203,8 +203,7 @@ void COptionsWindow::OnForceProg()
 	if (Value.isEmpty())
 		return;
 	AddForcedEntry(Value, (int)eProcess);
-	m_ForcedChanged = true;
-	OnOptChanged();
+	OnForcedChanged();
 }
 
 void COptionsWindow::OnBreakoutProg()
@@ -212,9 +211,10 @@ void COptionsWindow::OnBreakoutProg()
 	QString Value = SelectProgram();
 	if (Value.isEmpty())
 		return;
+	if (!CheckForcedItem(Value, (int)eProcess))
+		return;
 	AddBreakoutEntry(Value, (int)eProcess);
-	m_ForcedChanged = true;
-	OnOptChanged();
+	OnForcedChanged();
 }
 
 void COptionsWindow::OnForceBrowse()
@@ -222,9 +222,10 @@ void COptionsWindow::OnForceBrowse()
 	QString Value = QFileDialog::getOpenFileName(this, tr("Select Executable File"), "", tr("Executable Files (*.exe)"));
 	if (Value.isEmpty())
 		return;
+	if (!CheckForcedItem(Value, (int)eProcess))
+		return;
 	AddForcedEntry(Split2(Value, "/", true).second, (int)eProcess);
-	m_ForcedChanged = true;
-	OnOptChanged();
+	OnForcedChanged();
 }
 
 void COptionsWindow::OnBreakoutBrowse()
@@ -233,8 +234,7 @@ void COptionsWindow::OnBreakoutBrowse()
 	if (Value.isEmpty())
 		return;
 	AddBreakoutEntry(Split2(Value, "/", true).second, (int)eProcess);
-	m_ForcedChanged = true;
-	OnOptChanged();
+	OnForcedChanged();
 }
 
 void COptionsWindow::OnForceDir()
@@ -242,9 +242,10 @@ void COptionsWindow::OnForceDir()
 	QString Value = QFileDialog::getExistingDirectory(this, tr("Select Directory")).replace("/", "\\");
 	if (Value.isEmpty())
 		return;
+	if (!CheckForcedItem(Value, (int)ePath))
+		return;
 	AddForcedEntry(Value, (int)ePath);
-	m_ForcedChanged = true;
-	OnOptChanged();
+	OnForcedChanged();
 }
 
 void COptionsWindow::OnBreakoutDir()
@@ -253,28 +254,66 @@ void COptionsWindow::OnBreakoutDir()
 	if (Value.isEmpty())
 		return;
 	AddBreakoutEntry(Value, (int)ePath);
-	m_ForcedChanged = true;
-	OnOptChanged();
+	OnForcedChanged();
 }
 
 void COptionsWindow::OnDelForce()
 {
 	DeleteAccessEntry(ui.treeForced->currentItem());
-	m_ForcedChanged = true;
-	OnOptChanged();
+	OnForcedChanged();
 }
 
 void COptionsWindow::OnDelBreakout()
 {
 	DeleteAccessEntry(ui.treeBreakout->currentItem());
-	m_ForcedChanged = true;
-	OnOptChanged();
+	OnForcedChanged();
 }
 
-void COptionsWindow::OnForcedChanged() 
+void COptionsWindow::OnForcedChanged()
 {
-	//QString Test = pItem->data(1, Qt::UserRole).toString();
-	//qDebug() << Test;
 	m_ForcedChanged = true; 
 	OnOptChanged();
 }
+
+bool COptionsWindow::CheckForcedItem(const QString& Value, int type)
+{
+	bool bDangerous = false;
+
+	QString winPath = QString::fromUtf8(qgetenv("SystemRoot"));
+
+	if (type == eProcess)
+	{
+		if (Value.compare("explorer.exe", Qt::CaseInsensitive) == 0 || Value.compare(winPath + "\\explorer.exe", Qt::CaseInsensitive) == 0)
+			bDangerous = true;
+		else if (Value.compare("taskmgr.exe", Qt::CaseInsensitive) == 0 || Value.compare(winPath + "\\system32\\taskmgr.exe", Qt::CaseInsensitive) == 0)
+			bDangerous = true;
+		else if (Value.contains("sbiesvc.exe", Qt::CaseInsensitive) == 0)
+			bDangerous = true;
+		else if (Value.contains("sandman.exe", Qt::CaseInsensitive) == 0)
+			bDangerous = true;
+	}
+	else
+	{
+		if (Value.left(3).compare(winPath.left(3), Qt::CaseInsensitive) == 0)
+			bDangerous = true; // SystemDrive (C:\)
+		else if (Value.compare(winPath, Qt::CaseInsensitive) == 0)
+			bDangerous = true; // SystemRoot (C:\Windows)
+		else if (Value.left(winPath.length() + 1).compare(winPath + "\\", Qt::CaseInsensitive) == 0)
+			bDangerous = true; // sub path of C:\Windows
+	}
+
+	if (bDangerous && QMessageBox::warning(this, "Sandboxie-Plus", tr("The forcing the specified folder will most likely break windows, are you sure you want to proceed?")
+		, QDialogButtonBox::Yes, QDialogButtonBox::No) != QDialogButtonBox::Yes)
+		return false;
+	return true;
+}
+
+void COptionsWindow::OnForcedChanged(QTreeWidgetItem *pItem, int) 
+{
+	QString Value = pItem->data(1, Qt::UserRole).toString();
+	if (pItem->checkState(0) == Qt::Checked && !CheckForcedItem(Value, pItem->data(0, Qt::UserRole).toInt()))
+		pItem->setCheckState(0, Qt::Unchecked);
+	//qDebug() << Test;
+	OnForcedChanged();
+}
+
diff --git a/SandboxiePlus/SandMan/Windows/OptionsWindow.cpp b/SandboxiePlus/SandMan/Windows/OptionsWindow.cpp
index d8143ec1..33cce3c8 100644
--- a/SandboxiePlus/SandMan/Windows/OptionsWindow.cpp
+++ b/SandboxiePlus/SandMan/Windows/OptionsWindow.cpp
@@ -117,7 +117,9 @@ public:
 		if (pBox) {
 			
 			QString Value = pBox->property("value").toString();
+			bool prev = m_pTree->blockSignals(true);
 			pItem->setText(index.column(), pBox->currentText());
+			m_pTree->blockSignals(prev);
 			//QString Text = pBox->currentText();
 			//QVariant Data = pBox->currentData();
 			pItem->setData(index.column(), Qt::UserRole, Value);
@@ -125,7 +127,9 @@ public:
 
 		QLineEdit* pEdit = qobject_cast<QLineEdit*>(editor);
 		if (pEdit) {
+			bool prev = m_pTree->blockSignals(true);
 			pItem->setText(index.column(), pEdit->text());
+			m_pTree->blockSignals(prev);
 			QString Value = pEdit->text();
 			if (m_Group) Value = "<" + Value + ">";
 			pItem->setData(index.column(), Qt::UserRole, Value);
@@ -450,7 +454,7 @@ COptionsWindow::COptionsWindow(const QSharedPointer<CSbieIni>& pBox, const QStri
 	//ui.treeForced->setEditTriggers(QAbstractItemView::DoubleClicked);
 	ui.treeForced->setItemDelegateForColumn(0, new NoEditDelegate(this));
 	ui.treeForced->setItemDelegateForColumn(1, new ProgramsDelegate(this, ui.treeForced, -1, this));
-	connect(ui.treeForced, SIGNAL(itemChanged(QTreeWidgetItem *, int)), this, SLOT(OnForcedChanged()));
+	connect(ui.treeForced, SIGNAL(itemChanged(QTreeWidgetItem *, int)), this, SLOT(OnForcedChanged(QTreeWidgetItem *, int)));
 	connect(ui.chkDisableForced, SIGNAL(clicked(bool)), this, SLOT(OnForcedChanged()));
 
 	connect(ui.btnBreakoutProg, SIGNAL(clicked(bool)), this, SLOT(OnBreakoutProg()));
@@ -464,7 +468,7 @@ COptionsWindow::COptionsWindow(const QSharedPointer<CSbieIni>& pBox, const QStri
 	//ui.treeBreakout->setEditTriggers(QAbstractItemView::DoubleClicked);
 	ui.treeBreakout->setItemDelegateForColumn(0, new NoEditDelegate(this));
 	ui.treeBreakout->setItemDelegateForColumn(1, new ProgramsDelegate(this, ui.treeBreakout, -1, this));
-	connect(ui.treeBreakout, SIGNAL(itemChanged(QTreeWidgetItem*, int)), this, SLOT(OnForcedChanged()));
+	connect(ui.treeBreakout, SIGNAL(itemChanged(QTreeWidgetItem *, int)), this, SLOT(OnBreakoutChanged(QTreeWidgetItem *, int)));
 	//
 
 	// Stop
diff --git a/SandboxiePlus/SandMan/Windows/OptionsWindow.h b/SandboxiePlus/SandMan/Windows/OptionsWindow.h
index e80fb26e..82159daf 100644
--- a/SandboxiePlus/SandMan/Windows/OptionsWindow.h
+++ b/SandboxiePlus/SandMan/Windows/OptionsWindow.h
@@ -89,12 +89,14 @@ private slots:
 	void OnDelForce();
 	void OnShowForceTmpl()			{ LoadForcedTmpl(true); }
 	void OnForcedChanged();
+	void OnForcedChanged(QTreeWidgetItem *pItem, int);
 
 	void OnBreakoutProg();
 	void OnBreakoutBrowse();
 	void OnBreakoutDir();
 	void OnDelBreakout();
 	void OnShowBreakoutTmpl()		{ LoadBreakoutTmpl(true); }
+	void OnBreakoutChanged(QTreeWidgetItem *pItem, int);
 
 	void OnAddLingering();
 	void OnDelStopProg();
@@ -390,6 +392,7 @@ protected:
 	void LoadBreakoutTmpl(bool bUpdate = false);
 	void AddBreakoutEntry(const QString& Name, int type, bool disabled = false, const QString& Template = QString());
 	void SaveForced();
+	bool CheckForcedItem(const QString& Value, int type);
 
 
 	void LoadStop();