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QuickBooks: The user you are trying to log in with is already logged in from another machine.

When QuickBooks is used in mult-user mode, each user can only log in once.

The user that will be used by Sync & Save to log in to QuickBooks is configured in QuickBooks under Edit | Preferences | Integrated Applications | Company Preferences. Select Sync & Save in the list of Integrated Applications and click Preferences.

Make sure to assign Sync & Save a login user account that will not be used by other users.

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