QB Issue Resolution:

If someone gives you a backup of a company file and you don’t already have it in your QB, copy the file to your desktop.  Open QB and either File > Open or Restore (point QB to where you saved the file) and tell QB where on your hard drive to save it, or restore the backup or portable file.

Resolution for Issue 'How do I download another companies file from a stick?' available: Yes (Solved).
Source: Intuit Community forum.

How do I download another companies file from a stick?: 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 companies file
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Error Recovery for companies file [Canada]
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