If you need to change your installation license number, you can do so within QuickBooks without reinstalling. Changing a license number is typically done while speaking to an Intuit representative.
To do this task
Go to the Help menu, click Manage My License, and then click Change My License Number.
Enter your new license number and click Next.
In the Congratulations window, enter the codes the Intuit agent gives you and then click Finish.
Overview of QuickBooks licenses
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