First try to resolve the issue yourself by looking for a resolution described below. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. Support for this issue is available either by self-service or paid support options. How can I register Quickbooks 2012 under Mac OS 10.11(El Capitan)?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks.

Resolution for Issue 'How can I register Quickbooks 2012 under Mac OS 10.11(El Capitan)?' available: Yes (Solved). There is currently an upgrade price of about half off if you call Intuit. But for EL Capitan you really should be running Quickbooks Mac 2016.