You can install the software on up to 3 computers owned by you (at home or at work). You just need to use the Intuit Account. You will get error 603 if installation exceeds over the limit of 3.
There is no way to deactivate the License code that is already activated.
For more assistance with this issue, please contact us by phone. To talk to our phone support team, visit https://support.turbotax.intuit.ca/contact/ . After entering some basic info about what you need help with, the page will give you the phone number for the team best suited to help.
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