How to fix Runtime error!

Usually that means you have some buggy software that may need to be updated. Is it your browser that crashes, or something else?

If it is your browser, make sure it is up to date, and/or try another browser. If you use Internet Explorer try Firefox or Chrome.

If it is NOT your browser that crashes then doe sit say what did? Is it Flash, or maybe Java? Either of those might need to be updated.

You could also have a virus / trojan on your machine which is trying to run when you try to access you online bank.

As Phil said let us know how you access your online bank and at what point the error occurs and we can try and help further.

Try Update Microsoft NET. famework