Your Internet Security or the firewall might be blocking QuickBooks to access the Server.
Your Network might have experienced a Time Out during QuickBooks Payroll Download request.
The settings of your SSL are wrong.
The Internet Browser that you are using is not supported by QuickBooks.
We hope this article has helped you in resolving the QuickBooks Error 12007. There might be a remote chance of the issue still persisting even after you have performed all the steps accordingly. In such cases please contact the QuickBooks Error Support Number at +1-855-977-7463 for assistance.