QB Issue Resolution:
You can also use LogMeIn to set up a virtual network. In this case you could have both machines using the same file at all times.
http://www.qblittlesquare.com/2012/12/sharing-your-quickbooks-file-across-networks/
Resolution for Issue 'Can I share my data across 2 different computers?' available: Yes (Solved).
Source: Intuit Community forum.
Can I share my data across 2 different computers?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.
Support for QuickbooksQuickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!
Error Recovery for Quickbooks [Canada]
E-Tech is the #1 Quickbooks data migration and Conversion service provider.
Additional Support Options: