Error 101 is sometimes caused by damage or missing file. Let's try updating your bank manually.
Here's how to do it:
You'll receive a notification once the update is complete and successful.
If you're still unable to connect, you'll want to configure QuickBooks and your internet connection.
The steps are outlined in this article under "Operate Internet Explorer in Compatibility View" and "Change the Internet Explorer options": https://quickbooks.intuit.com/community/Help-Articles/Configure-Internet-Explorer-to-work-with-Quick....
Please know that we're always here for you if you have additional questions. Don't hesitate to reach out.