The Commonwealth Bank (CommBank) app usually stops working for a few main reasons: temporary bank outages or maintenance, internet or device issues, or a problem with your specific app install or login details.

Common reasons it is not working

  • Planned maintenance or outages
    • CommBank sometimes takes NetBank and the app offline for overnight or early-morning maintenance, which can block transfers, payments or logins for a few hours.
* There are also occasional larger tech outages that affect millions of customers and can stop EFTPOS, app and online banking at the same time.
  • Internet or network issues on your side
    • Slow or unstable Wi‑Fi/mobile data can cause the app to freeze on the loading screen, show errors, or fail to log in.
* VPNs, proxies or custom DNS settings can interfere with the secure connection banking apps need, so the app may time out or fail to connect.
  • Outdated or glitchy app version
    • Running an old version of the CommBank app can lead to crashes, “keeps stopping” errors, or features not loading properly.
* Sometimes a recent update installs badly and the app becomes buggy until it is reinstalled.
  • Corrupted cache or app data
    • On both iOS and Android, cached data can get corrupted over time, making the app crash or get stuck on the splash/loading screen.
* Clearing cache, offloading the app (iOS) or reinstalling often fixes these hidden data issues.
  • Login or account‑related issues
    • If your NetBank client number or password are wrong, or you have an account lock, it can feel like “the app is broken” when it’s really a login problem.
* Security flags on your profile or too many failed login attempts can also temporarily block access until you reset credentials or contact support.

Quick things you can try

If you just want to get the app working again, these are the most common fixes people report working in 2024–2025 guides and tutorials.

  1. Check if it’s a wider outage
    • Look at CommBank’s official status page or social channels to see if there’s a known outage or planned maintenance.
 * Also check recent news or forums (e.g., Reddit /r/AusFinance, /r/melbourne) where users often post when the app goes down for many people.
  1. Test your connection
    • Switch between Wi‑Fi and mobile data to see if one works better.
 * Turn off any VPN/proxy/custom DNS briefly, then relaunch the app.
  1. Fully close and restart the app
    • Force‑close the CommBank app from the app switcher, wait a few seconds, then open it again.
  1. Update the app
    • Open the App Store or Google Play, search “CommBank” and see if there is an Update button instead of Open.
 * Install the latest version and try again.
  1. Clear cache / offload or reinstall
    • iPhone: Settings → General → iPhone Storage → find CommBank → Offload App, then reinstall; if still broken, delete and reinstall from the App Store.
 * Android: Long‑press the app → App info → Storage → Clear cache; if needed, uninstall then reinstall from Google Play.
  1. Check your login details
    • Carefully re‑enter your client number and password; use “Forgot password” if unsure.
 * If you still cannot log in while the app is clearly online, your profile may need help from support.

What’s been happening recently (trending context)

  • In late 2025 there was at least one widely‑reported CommBank app outage affecting transfers and access for many users, discussed heavily on finance forums and in online news.
  • Past major outages have even stopped some customers paying at petrol stations and shops because EFTPOS and app services went down together.

When to contact the bank

You should contact CommBank support or visit a branch if:

  • The app still does not work after trying different networks, updating and reinstalling.
  • You suspect your account is locked, compromised, or you see unusual activity.
  • The website status says systems are normal, but you alone still cannot log in.

Information gathered from public forums or data available on the internet and portrayed here.