Hi, my name is ***** ***** I'll be helping you today.
In order for me to help effectively, could you please answer a few question:
What internet browser do you use to access these banking sites?
Do you have any third party security software installed (McAfee, Symantec, Kaspersky)
Did this problem begin immediately following the upgrade to Windows 10, or was it initially working and then started erroring?
Please reply back so I can investigate a solution. There could be more than one thing we need to do to get it repaired.