diff --git a/komorebi/src/lib.rs b/komorebi/src/lib.rs
index 8d87e90a..587666fe 100644
--- a/komorebi/src/lib.rs
+++ b/komorebi/src/lib.rs
@@ -173,6 +173,8 @@ lazy_static! {
             matching_strategy: Option::from(MatchingStrategy::Equals),
         }),
     ]));
+    static ref DUPLICATE_MONITOR_SERIAL_IDS: Arc<Mutex<Vec<String>>> =
+        Arc::new(Mutex::new(Vec::new()));
     static ref SUBSCRIPTION_PIPES: Arc<Mutex<HashMap<String, File>>> =
         Arc::new(Mutex::new(HashMap::new()));
     pub static ref SUBSCRIPTION_SOCKETS: Arc<Mutex<HashMap<String, PathBuf>>> =
diff --git a/komorebi/src/monitor_reconciliator/mod.rs b/komorebi/src/monitor_reconciliator/mod.rs
index b9d57816..cb099744 100644
--- a/komorebi/src/monitor_reconciliator/mod.rs
+++ b/komorebi/src/monitor_reconciliator/mod.rs
@@ -13,6 +13,7 @@ use crate::State;
 use crate::WindowManager;
 use crate::WindowsApi;
 use crate::DISPLAY_INDEX_PREFERENCES;
+use crate::DUPLICATE_MONITOR_SERIAL_IDS;
 use crate::WORKSPACE_MATCHING_RULES;
 use crossbeam_channel::Receiver;
 use crossbeam_channel::Sender;
@@ -84,9 +85,32 @@ pub fn insert_in_monitor_cache(serial_or_device_id: &str, monitor: Monitor) {
 }
 
 pub fn attached_display_devices() -> color_eyre::Result<Vec<Monitor>> {
-    Ok(win32_display_data::connected_displays_all()
+    let all_displays = win32_display_data::connected_displays_all()
         .flatten()
-        .map(|display| {
+        .collect::<Vec<_>>();
+
+    let mut serial_id_map = HashMap::new();
+
+    for d in &all_displays {
+        if let Some(id) = &d.serial_number_id {
+            *serial_id_map.entry(id.clone()).or_insert(0) += 1;
+        }
+    }
+
+    for d in &all_displays {
+        if let Some(id) = &d.serial_number_id {
+            if serial_id_map.get(id).copied().unwrap_or_default() > 1 {
+                let mut dupes = DUPLICATE_MONITOR_SERIAL_IDS.lock();
+                if !dupes.contains(id) {
+                    dupes.push(id.clone());
+                }
+            }
+        }
+    }
+
+    Ok(all_displays
+        .into_iter()
+        .map(|mut display| {
             let path = display.device_path;
 
             let (device, device_id) = if path.is_empty() {
@@ -103,6 +127,13 @@ pub fn attached_display_devices() -> color_eyre::Result<Vec<Monitor>> {
             let name = display.device_name.trim_start_matches(r"\\.\").to_string();
             let name = name.split('\\').collect::<Vec<_>>()[0].to_string();
 
+            if let Some(id) = &display.serial_number_id {
+                let dupes = DUPLICATE_MONITOR_SERIAL_IDS.lock();
+                if dupes.contains(id) {
+                    display.serial_number_id = None;
+                }
+            }
+
             monitor::new(
                 display.hmonitor,
                 display.size.into(),
@@ -270,9 +301,15 @@ pub fn handle_notifications(wm: Arc<Mutex<WindowManager>>) -> color_eyre::Result
                 // Make sure that in our state any attached displays have the latest Win32 data
                 for monitor in wm.monitors_mut() {
                     for attached in &attached_devices {
-                        if attached.serial_number_id().eq(monitor.serial_number_id())
-                            || attached.device_id().eq(monitor.device_id())
+                        let serial_number_ids_match = if let (Some(attached_snid), Some(m_snid)) =
+                            (attached.serial_number_id(), monitor.serial_number_id())
                         {
+                            attached_snid.eq(m_snid)
+                        } else {
+                            false
+                        };
+
+                        if serial_number_ids_match || attached.device_id().eq(monitor.device_id()) {
                             monitor.set_id(attached.id());
                             monitor.set_device(attached.device().clone());
                             monitor.set_device_id(attached.device_id().clone());
diff --git a/komorebi/src/windows_api.rs b/komorebi/src/windows_api.rs
index c25526cb..43dbe987 100644
--- a/komorebi/src/windows_api.rs
+++ b/komorebi/src/windows_api.rs
@@ -153,6 +153,7 @@ use crate::windows_callbacks;
 use crate::Window;
 use crate::WindowManager;
 use crate::DISPLAY_INDEX_PREFERENCES;
+use crate::DUPLICATE_MONITOR_SERIAL_IDS;
 use crate::MONITOR_INDEX_PREFERENCES;
 
 macro_rules! as_ptr {
@@ -258,7 +259,30 @@ impl WindowsApi {
         let monitors = &mut wm.monitors;
         let monitor_usr_idx_map = &mut wm.monitor_usr_idx_map;
 
-        'read: for display in win32_display_data::connected_displays_all().flatten() {
+        let all_displays = win32_display_data::connected_displays_all()
+            .flatten()
+            .collect::<Vec<_>>();
+
+        let mut serial_id_map = HashMap::new();
+
+        for d in &all_displays {
+            if let Some(id) = &d.serial_number_id {
+                *serial_id_map.entry(id.clone()).or_insert(0) += 1;
+            }
+        }
+
+        for d in &all_displays {
+            if let Some(id) = &d.serial_number_id {
+                if serial_id_map.get(id).copied().unwrap_or_default() > 1 {
+                    let mut dupes = DUPLICATE_MONITOR_SERIAL_IDS.lock();
+                    if !dupes.contains(id) {
+                        dupes.push(id.clone());
+                    }
+                }
+            }
+        }
+
+        'read: for mut display in all_displays {
             let path = display.device_path.clone();
 
             let (device, device_id) = if path.is_empty() {
@@ -281,6 +305,13 @@ impl WindowsApi {
                 }
             }
 
+            if let Some(id) = &display.serial_number_id {
+                let dupes = DUPLICATE_MONITOR_SERIAL_IDS.lock();
+                if dupes.contains(id) {
+                    display.serial_number_id = None;
+                }
+            }
+
             let m = monitor::new(
                 display.hmonitor,
                 display.size.into(),
@@ -972,7 +1003,7 @@ impl WindowsApi {
     }
 
     pub fn monitor(hmonitor: isize) -> Result<Monitor> {
-        for display in win32_display_data::connected_displays_all().flatten() {
+        for mut display in win32_display_data::connected_displays_all().flatten() {
             if display.hmonitor == hmonitor {
                 let path = display.device_path;
 
@@ -990,6 +1021,13 @@ impl WindowsApi {
                 let name = display.device_name.trim_start_matches(r"\\.\").to_string();
                 let name = name.split('\\').collect::<Vec<_>>()[0].to_string();
 
+                if let Some(id) = &display.serial_number_id {
+                    let dupes = DUPLICATE_MONITOR_SERIAL_IDS.lock();
+                    if dupes.contains(id) {
+                        display.serial_number_id = None;
+                    }
+                }
+
                 let monitor = monitor::new(
                     hmonitor,
                     display.size.into(),