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Here are a few troubleshooting steps to help resolve the error 603 you are encountering.
Why can't I get into turbo tax to complete my return error code 603?
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chuntutiu
New Member
Krystal81
SpartanFan8
2K5
Meatball1409
Level 1
You have clicked a link to a site outside of the TurboTax Community. By clicking "Continue", you will leave the Community and be taken to that site instead.