Are you experiencing frustration with the NS&I mobile app displaying the dreaded “Something Went Wrong” error message? Don’t worry, you’re not alone.
Many users have encountered this issue, and we’re here to help.
In this comprehensive guide, we will walk you through the steps to troubleshoot and resolve the NS&I app error, ensuring that you can seamlessly access your National Savings & Investments account without any hiccups.

How To Fix NS&I App Something Went Wrong Error?
If your NS&I app is showing something went wrong error message, then you can check for service outages, and internet connection and update your app. Moreover, you may also clear the app cache, and reset your details.
Below is a detailed explanation of all the above-mentioned fixes:
1. Check For Service Outages

Visit the NS&I website or check reliable sources like Downdetector to see if there are any reported outages or technical issues with the NS&I app.
If there’s a widespread issue, it’s likely that the problem is on their end, and you may need to wait for them to resolve it.
2. Check Internet Connection
Verify that you have a stable and strong internet connection. Weak or unstable internet connectivity can sometimes lead to errors in-app functionality.
While experiencing a slow or no internet connection, it is suggested to reboot the Wi-Fi router. These are the steps to follow in restarting the Wi-Fi router:
- Simply switch off the router and unplug it from all the devices and power supply.
- Wait for 3 minutes and then plug it in again.
- Now wait for the signal to come back and connect to the internet through it.
You can check your internet speed by clicking here.
3. Update Your Browser Or App
Ensure that you are using a supported browser or the latest version of the NS&I mobile app. This can help resolve compatibility issues and improve the app’s performance.
To update the NS&I app, you can follow these steps:
- Check for App Updates: Visit the app store on your device (Google Play Store for Android or the App Store for iOS).
- Search for NS&I App: In the app store, search for “NS&I” to find the official app.
- Update the App: If an update is available, you will see an “Update” button next to the app. Tap on the button to download and install the latest version of the NS&I app.
- Restart Your Device: Once the update is complete, restart your device to ensure the changes take effect.
4. Clear NS&I App Cache And Data
If you are using an Android device, you can try clearing the app’s cache and data.
Clear Cache for Android
- Go to Settings on your device.
- Open Apps.
- Select Manage Apps.
- Navigate to the NS&I app and tap on it.
- Tap on Clear Data or Clear Cache.
Clear Cache for iPhone
- Go to iPhone settings.
- Go to General.
- Find NS&I app and click on that.
- Tap on the Offload App button.
- Again Reinstall the NS&I app.
5. Reset Your Details In NS&I
If you are having trouble logging in, you can reset your details using the online form or automated call feature. This can help resolve issues related to account access.
To reset your details for the NS&I app, you can follow these steps:
- Online Reset:
- Visit the NS&I website and access the “Manage Your Details” section.
- If you are having trouble logging in, you can reset your details using the online form. You will need your account or holder’s number and the type of account you hold with NS&I.
- Automated Call:
- After submitting the online form, you will receive an automated call to complete the reset process. Ensure you have your phone with you to receive the call and follow the instructions provided
6. Contact NS&I Support

If none of the above steps resolve the issue, you can reach out to NS&I support for further assistance.
They may have specific troubleshooting steps or be able to provide insight into the cause of the error.