I don't get an error message but Turbotax is stuck "waiting for data".  I had connected to CRA using a login partner.

Is this the same issue as reported above?

@phchfruk1 We made some verifications and Auto-Fill should work properly, on both versions, TurboTax Online and Desktop.

We invite you to try again.

Thank you for choosing TurboTax.

I just tried using Turbo Tax Online 2024 to access my CRA account tax slips and received ERR.021 from the CRA website. Is there a work around or fix for this problem ?

@Arnold Porter This is an error message generate by CRA access. We suggest you to log in to your CRA My Account and, by example, verify the authorization for TurboTax. With that error code should contact the CRA via phone for assistance and have this fixed.

Contact the Canada Revenue Agency (CRA)
 

Thank you for choosing TurboTax.