diff --git a/desktop/flow-typed/npm/electron_v22.0.0.js b/desktop/flow-typed/npm/electron_v22.0.0.js
--- a/desktop/flow-typed/npm/electron_v22.0.0.js
+++ b/desktop/flow-typed/npm/electron_v22.0.0.js
@@ -391,6 +391,11 @@
     senderId: number,
     ports: $ReadOnlyArray<MessagePort>,
   };
+
+  declare export var dialog: Dialog;
+  declare class Dialog {
+    showErrorBox(title: string, content: string): void;
+  }
 }
 
 declare module 'electron/main' {
@@ -402,6 +407,7 @@
     ipcMain,
     systemPreferences,
     autoUpdater,
+    dialog,
   } from 'electron';
 }
 
diff --git a/desktop/src/main.js b/desktop/src/main.js
--- a/desktop/src/main.js
+++ b/desktop/src/main.js
@@ -8,6 +8,7 @@
   ipcMain,
   systemPreferences,
   autoUpdater,
+  dialog,
   // eslint-disable-next-line import/extensions
 } from 'electron/main';
 import fs from 'fs';
@@ -286,3 +287,13 @@
 } else {
   run();
 }
+
+process.on('uncaughtException', (error: Error) => {
+  if (error.message === 'The internet connection appears to be offline.') {
+    return;
+  }
+  dialog.showErrorBox(
+    'A JavaScript error occurred in the main process',
+    `Uncaught Exception: ${error.name}: ${error.message}`,
+  );
+});