QB Issue Resolution:

a back up file ends in the .qbb file extension, and you use restore from back up in the file menu

your error listing shows that you used open which makes QB look for a file that ends in .qbw, qbw is one of several needed files in a group of working files for that company

make the back up on desktop one

copy the back up, .qbb file, to the other desktop

use file>open or restore and choose restore

Resolution for Issue 'Could you guide me to get backup from one desktop and open it on another desktop.' available: Yes (Solved).
Source: Intuit Community forum.

Could you guide me to get backup from one desktop and open it on another desktop.: 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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