QuickBooks error code 12157 and don’t know what to do? As per the recent reports, many users have reported this error thanks to various reasons, like improper installation, data connectivity issues, upgrade errors, update errors, and what not. This error code falls under the 12000 error series that happens thanks to the online connectivity problems with Microsoft Win32 Internet. If you are getting a problem then contact now - 1844 827 3817.