Banking online/updates

The operating system is Microsoft 10.  I use Quicken-Home & Business.  Been having issues with connecting with my bank to get updates, (download transactions.)  Quicken support has told me they don't have a solution, OTHER THAN my virus software may be causing their program to not operate properly.  This has been occurring for several months.

I have most of the 'Bells & Whistles' with AVG internet security…even the VPN service.  

Does anyone out there have suggestions?