When attempting to sync data with Intuit Sync Manager you receive the message Error Code 4_6170.
Make sure you have the latest Intuit Sync Manager update.
Error Category: Can't open the company file
Error Message: There was an error while connecting to your company file.
Intuit is currently researching this issue as it has recently become more prevalent. It is happening more often when you are syncing a company in a prior version of QuickBooks while 2013 in also installed on the same computer.
Intuit recommends the following 2 Workarounds as Solutions for the time being as we are working towards a permanent resolution
Uninstall QuickBooks 2013
Update the company file to QuickBooks 2013, then Synch again.
If this solution does not resolve the issue, you can read discussions and post messages and questions relating to your issue on the Intuit QuickBooks Community site. You can also call us at 800.450.8475 to speak with a technical support agent. Fees may apply.