There are some steps, given below to fix the error 310. And you need to follow each step carefully.
●Choose the banking option in the left menu.
●To the account, select pencil option and click.
●Now click on edit sign-in information.
●Go in the top of the windows, select the hyperlink for the bank’s website and click.
●After that, you will see the new windows will be open on the bank’s website.
●After confirming you can see the account summary, details, history without any error.
For more information join QuickBooks Error Support. The Intuit certified executives will offer you more information regarding this error.