QB Issue Resolution:

Per the Intuit EULA, you are required to have one license per user (and yes, even if they are using the same computer!). They relate it to a driving license (one per driver, not per car). You can probably get Pro 2014 on Amazon for a good price.

Resolution for Issue 'If I try to open quickbooks pro 2014 on both my shop and office computers at once the second iteration cannot access the company file. How can I fix this.' available: Yes (Solved).
Source: Intuit Community forum.

If I try to open quickbooks pro 2014 on both my shop and office computers at once the second iteration cannot access the company file. How can I fix this.: 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.

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