diff --git a/editor/dialogs.tsx b/editor/dialogs.tsx
index a943d59f92b..0560df83883 100644
--- a/editor/dialogs.tsx
+++ b/editor/dialogs.tsx
@@ -16,7 +16,18 @@ export function cantImportAsync(project: pxt.editor.IProjectView) {
 
 
 export async function showProgramTooLargeErrorAsync(variants: string[], confirmAsync: (opts: any) => Promise<number>, saveOnly?: boolean) {
-    if (variants.length !== 2) return undefined;
+    if (variants.length !== 2) {
+        if (variants[0] !== "mbcodal") return undefined;
+        await confirmAsync({
+            header: lf("Oops, there was a problem downloading your code"),
+            body: lf("Great coding skills! Unfortunately, your program is too large to fit on a micro:bit V2😢. You can go back and try to make your program smaller, or continue to use the simulator to run your code."),
+            bigHelpButton: true,
+            agreeLbl: lf("Go Back"),
+            agreeClass: "positive",
+            agreeIcon: "cancel",
+        });
+        return undefined
+    }
 
     if (pxt.packetio.isConnected() && pxt.packetio.deviceVariant() === "mbcodal" && !saveOnly) {
         // connected micro:bit V2 will be flashed; don't give warning dialog