diff --git a/pcsx2-gsrunner/Main.cpp b/pcsx2-gsrunner/Main.cpp
index 4a1fd2669b..b991537f60 100644
--- a/pcsx2-gsrunner/Main.cpp
+++ b/pcsx2-gsrunner/Main.cpp
@@ -175,16 +175,6 @@ void Host::ReportErrorAsync(const std::string_view title, const std::string_view
 		ERROR_LOG("ReportErrorAsync: {}", message);
 }
 
-bool Host::ConfirmMessage(const std::string_view title, const std::string_view message)
-{
-	if (!title.empty() && !message.empty())
-		ERROR_LOG("ConfirmMessage: {}: {}", title, message);
-	else if (!message.empty())
-		ERROR_LOG("ConfirmMessage: {}", message);
-
-	return true;
-}
-
 void Host::OpenURL(const std::string_view url)
 {
 	// noop
diff --git a/pcsx2-qt/MainWindow.cpp b/pcsx2-qt/MainWindow.cpp
index 43eec1fbbe..1e6aaa188f 100644
--- a/pcsx2-qt/MainWindow.cpp
+++ b/pcsx2-qt/MainWindow.cpp
@@ -427,7 +427,6 @@ void MainWindow::connectSignals()
 
 void MainWindow::connectVMThreadSignals(EmuThread* thread)
 {
-	connect(thread, &EmuThread::messageConfirmed, this, &MainWindow::confirmMessage, Qt::BlockingQueuedConnection);
 	connect(thread, &EmuThread::statusMessage, this, &MainWindow::onStatusMessage);
 	connect(thread, &EmuThread::onAcquireRenderWindowRequested, this, &MainWindow::acquireRenderWindow, Qt::BlockingQueuedConnection);
 	connect(thread, &EmuThread::onReleaseRenderWindowRequested, this, &MainWindow::releaseRenderWindow, Qt::BlockingQueuedConnection);
diff --git a/pcsx2-qt/QtHost.cpp b/pcsx2-qt/QtHost.cpp
index 8a712d594a..770296497c 100644
--- a/pcsx2-qt/QtHost.cpp
+++ b/pcsx2-qt/QtHost.cpp
@@ -141,41 +141,6 @@ void EmuThread::stopInThread()
 	m_shutdown_flag.store(true);
 }
 
-bool EmuThread::confirmMessage(const QString& title, const QString& message)
-{
-	if (!isOnEmuThread())
-	{
-		// This is definitely deadlock risky, but unlikely to happen (why would GS be confirming?).
-		bool result = false;
-		QMetaObject::invokeMethod(g_emu_thread, "confirmMessage", Qt::BlockingQueuedConnection, Q_RETURN_ARG(bool, result),
-			Q_ARG(const QString&, title), Q_ARG(const QString&, message));
-		return result;
-	}
-
-	// Easy if there's no VM.
-	if (!VMManager::HasValidVM())
-		return emit messageConfirmed(title, message);
-
-	// Preemptively pause/set surfaceless on the emu thread, because it can't run while the popup is open.
-	const bool was_paused = (VMManager::GetState() == VMState::Paused);
-	const bool was_fullscreen = isFullscreen();
-	if (!was_paused)
-		VMManager::SetPaused(true);
-	if (was_fullscreen)
-		setSurfaceless(true);
-
-	// This won't return until the user confirms one way or another.
-	const bool result = emit messageConfirmed(title, message);
-
-	// Resume VM after confirming.
-	if (was_fullscreen)
-		setSurfaceless(false);
-	if (!was_paused)
-		VMManager::SetPaused(false);
-
-	return result;
-}
-
 void EmuThread::startFullscreenUI(bool fullscreen)
 {
 	if (!isOnEmuThread())
@@ -1649,13 +1614,6 @@ void Host::ReportErrorAsync(const std::string_view title, const std::string_view
 		Q_ARG(const QString&, message.empty() ? QString() : QString::fromUtf8(message.data(), message.size())));
 }
 
-bool Host::ConfirmMessage(const std::string_view title, const std::string_view message)
-{
-	const QString qtitle(QString::fromUtf8(title.data(), title.size()));
-	const QString qmessage(QString::fromUtf8(message.data(), message.size()));
-	return g_emu_thread->confirmMessage(qtitle, qmessage);
-}
-
 void Host::OpenURL(const std::string_view url)
 {
 	QtHost::RunOnUIThread([url = QtUtils::StringViewToQString(url)]() { QtUtils::OpenURL(g_main_window, QUrl(url)); });
diff --git a/pcsx2-qt/QtHost.h b/pcsx2-qt/QtHost.h
index e732b6d074..0785f4d811 100644
--- a/pcsx2-qt/QtHost.h
+++ b/pcsx2-qt/QtHost.h
@@ -77,7 +77,6 @@ public:
 	void updatePerformanceMetrics(bool force);
 
 public Q_SLOTS:
-	bool confirmMessage(const QString& title, const QString& message);
 	void loadSettings(SettingsInterface& si, std::unique_lock<std::mutex>& lock);
 	void checkForSettingChanges(const Pcsx2Config& old_config);
 	void startFullscreenUI(bool fullscreen);
@@ -114,7 +113,6 @@ public Q_SLOTS:
 	void endCapture();
 
 Q_SIGNALS:
-	bool messageConfirmed(const QString& title, const QString& message);
 	void statusMessage(const QString& message);
 
 	std::optional<WindowInfo> onAcquireRenderWindowRequested(bool recreate_window, bool fullscreen, bool render_to_main, bool surfaceless);
diff --git a/pcsx2/Host.cpp b/pcsx2/Host.cpp
index 15a287bbe4..a089b3f120 100644
--- a/pcsx2/Host.cpp
+++ b/pcsx2/Host.cpp
@@ -154,16 +154,6 @@ void Host::ReportFormattedErrorAsync(const std::string_view title, const char* f
 	ReportErrorAsync(title, message);
 }
 
-bool Host::ConfirmFormattedMessage(const std::string_view title, const char* format, ...)
-{
-	std::va_list ap;
-	va_start(ap, format);
-	std::string message = StringUtil::StdStringFromFormatV(format, ap);
-	va_end(ap);
-
-	return ConfirmMessage(title, message);
-}
-
 std::string Host::GetHTTPUserAgent()
 {
 	return fmt::format("PCSX2 {} ({})", BuildVersion::GitRev, GetOSVersionString());
diff --git a/pcsx2/Host.h b/pcsx2/Host.h
index 0f9d17391b..50023cc9d4 100644
--- a/pcsx2/Host.h
+++ b/pcsx2/Host.h
@@ -63,10 +63,6 @@ namespace Host
 	void ReportErrorAsync(const std::string_view title, const std::string_view message);
 	void ReportFormattedErrorAsync(const std::string_view title, const char* format, ...);
 
-	/// Displays a synchronous confirmation on the UI thread, i.e. blocks the caller.
-	bool ConfirmMessage(const std::string_view title, const std::string_view message);
-	bool ConfirmFormattedMessage(const std::string_view title, const char* format, ...);
-
 	/// Sets batch mode (exit after game shutdown).
 	bool InBatchMode();
 
diff --git a/tests/ctest/core/StubHost.cpp b/tests/ctest/core/StubHost.cpp
index 9d30641bbd..bcf741a90f 100644
--- a/tests/ctest/core/StubHost.cpp
+++ b/tests/ctest/core/StubHost.cpp
@@ -46,11 +46,6 @@ void Host::ReportErrorAsync(const std::string_view title, const std::string_view
 {
 }
 
-bool Host::ConfirmMessage(const std::string_view title, const std::string_view message)
-{
-	return true;
-}
-
 void Host::OpenURL(const std::string_view url)
 {
 }