diff --git a/packages/electron-app/electron/main/main.ts b/packages/electron-app/electron/main/main.ts
index 09263b6a..4b31cc9a 100644
--- a/packages/electron-app/electron/main/main.ts
+++ b/packages/electron-app/electron/main/main.ts
@@ -1,7 +1,7 @@
 import { app, BrowserView, BrowserWindow, nativeImage, session, shell } from "electron"
 import http from "node:http"
 import https from "node:https"
-import { existsSync, mkdirSync } from "fs"
+import { existsSync, mkdirSync, rmSync } from "fs"
 import { dirname, join } from "path"
 import { fileURLToPath } from "url"
 import { createApplicationMenu } from "./menu"
@@ -39,6 +39,49 @@ function configureDevStoragePaths() {
 
 configureDevStoragePaths()
 
+function configurePackagedStoragePaths() {
+  if (!app.isPackaged) {
+    return
+  }
+
+  try {
+    const sessionDataPath = join(app.getPath("userData"), "session-data-v2")
+    mkdirSync(sessionDataPath, { recursive: true })
+    app.setPath("sessionData", sessionDataPath)
+  } catch (error) {
+    console.warn("[electron-startup] failed to configure packaged session data path", error)
+  }
+}
+
+configurePackagedStoragePaths()
+
+function cleanupPackagedChromiumStorage() {
+  if (!app.isPackaged) {
+    return
+  }
+
+  const roots = [app.getPath("sessionData"), app.getPath("userData"), join(app.getPath("userData"), "session-data")]
+  const names = ["Service Worker", "QuotaManager", "QuotaManager-journal"]
+
+  for (const root of roots) {
+    for (const name of names) {
+      const candidate = join(root, name)
+      if (!existsSync(candidate)) {
+        continue
+      }
+
+      try {
+        rmSync(candidate, { recursive: true, force: true })
+        console.info("[electron-startup] removed stale Chromium storage", candidate)
+      } catch (error) {
+        console.warn("[electron-startup] failed to remove stale Chromium storage", candidate, error)
+      }
+    }
+  }
+}
+
+cleanupPackagedChromiumStorage()
+
 const cliManager = new CliProcessManager()
 let mainWindow: BrowserWindow | null = null
 let currentCliUrl: string | null = null
@@ -129,7 +172,8 @@ function isIgnorableNavigationError(error: unknown): boolean {
   }
 
   const code = "code" in error ? String((error as { code?: unknown }).code ?? "") : ""
-  return code === "ERR_ABORTED" || code === "ERR_FAILED"
+  const message = "message" in error ? String((error as { message?: unknown }).message ?? "") : ""
+  return code === "ERR_ABORTED" || code === "ERR_FAILED" || message.includes("ERR_ABORTED") || message.includes("ERR_FAILED")
 }
 
 function getAllowedRendererOrigins(window?: BrowserWindow | null): string[] {