QB Issue Resolution:

You can install a single user license of QB to a maximum of two different computers. However, if you wish to use it in a Multiuser Mode in order to have simultaneous access between different users and to sync your company file information on different computers, having additional user licenses is needed.

Once this is setup, you may now set company restrictions for each user on the same company file.

Please let me know if you have additional questions.

Resolution for Issue 'I want to add computers to Quickbooks.' available: Yes (Solved).
Source: Intuit Community forum.

I want to add computers to Quickbooks.: 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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