It depends.
Are you trying to open a prior year tax file in the online program?
If so, you can't. The online program is only for the 2019 tax return.
If you need to open a 2017 tax file, you will need to download the 2017 tax program onto your desktop. See the attached for more information on downloading the prior year program.
Please see the section titled To amend your 2017 or 2016 return for specific instructions.
Prior year .tax file access
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