Any kind of issues in these components would affect working of Quickbooks online as well as Quickbooks desktop. QuickBooks Online Banking Error 101 is a scripting error which happens when a window fails to execute a command which is needed to run web-based applications. Quickbooks  error 101 appears due to faulty windows configuration or wrong internet configuration. Error 101 pops up with a message – “ Looks like the connection to the Bank Business Online Banking isn’t  available right now. Try again later”.
 
Causes of QuickBooks Online Banking Error 101:
 
1. Faults in the window configuration.
2. Windows fails to run the Flash and java. 
3. Windows fails to run .Net Framework and ActiveX. 
4. Wrongly configured internet explorer settings.
5. Blocked window components.
6. Disable script debugging.
 
How to Resolve QuickBooks Online Banking Error 101?
 
Solution 1: Reconfiguring Internet Explorer settings.
Solution 2: Resetting the Pop up settings.
Solution 3: Enabling ActiveX controls.
Solution 4: Enabling TLS 1.2.
Solution 5: Updating .NET framework, JAVA and Adobe flash player.
Solution 6: Updating Quickbooks online manually.
 
If the above mentioned methods do not work in fixing QuickBooks Online Banking Error 101 , you can reach out to QuickBooks enterprise support at 1-888-485-0289,  and our team of experts will help you to get rid of Quickbooks error 101.