The license code you entered is not valid. Error code: 605

This didn't help.

I called TurboTax customer case and they confirmed that error 605 is for canceled license  and i am checking on that.

You can call TurboTax and speak with an agent.  TurboTax customer service/support does not have a single phone number but has many different phone numbers based on the type of platform used.  So that we can direct your call to the best person/department to help you:

1. Click on this link:  https://support.turbotax.intuit.com/contact/
2. Select your TurboTax platform.  
3. Ask your question / state your problem.  Do NOT use the word "refund' or you will get a phone number for tax refunds.
4. Click Submit.
5. On the next screen, choose the Call option and follow the instructions.  You will be given the approximate wait time.  

You'll get a toll-free number to a TurboTax expert who is specially-trained to handle your particular issue.

So you have a flash drive inserted on your computer?  This can happen if you do.

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@lmb99 wrote:

How is this possible to have used license code from Jan 2021 to May 2021 without any issues.  I've filed returned, and now going back in to look at something in the application, I'm locked out.  The application updated before opening without giving me a choice to apply any new program updates.  Now, it requires activation code and does NOT accept my activation that came with my purchase.  VERY UPSETTING as is the fact there is no known way to contact TurbTax/Intuit Support.  It all just leads me back to this community board where we get to complain versus resolve our issues that points to Intuit's doing.

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See the info left for you in your other thread at:

https://ttlc.intuit.com/community/taxes/discussion/re-2020-turbotax-16-digid-activation-code-not-working/01/2338480#M835930

It also tells you how to speak to Customer Support on Monday, if needed.

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@janetpbailey wrote:

Respond to subject please

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See this TurboTax support FAQ for the license code - https://ttlc.intuit.com/community/tax-topics/help/i-can-t-find-my-license-code/00/852973

If you are receiving an error after entering the license code, contact TurboTax support for assistance.

Support is open from 5am to 5pm Pacific time, Monday thru Friday

Use this website to contact TurboTax support during business hours - https://support.turbotax.intuit.com/contact/

Or -

Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax

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@ er3217   wrote: "My Turbo Tax Premier CD License code results error code 605"

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This is a public Internet community forum, not a direct route to TurboTax Support.   You should not post any personal info here.   TurboTax Support won't email you, but someone could try to spam/scam you.  It looks like the forum spam filter removed your email address for your protection.   To remove your order number, you can edit your question by clicking on the small blue 3-dot icon just to the right of your question.

Here's a FAQ about error codes, but it may not help, so I'll also tell you how to phone Customer Support.

https://ttlc.intuit.com/community/tax-topics/help/my-code-doesn-t-work/00/871966

If you don't get any suggestions about Error 605 in this user forum, you can phone TurboTax Support. 

This time of year they are open every day 5AM-9PM Pacific, but they may be closed Monday for the holiday.

You can use this contact form to get a phone number, or it may schedule a callback.
https://support.turbotax.intuit.com/contact

Here's how to Contact TurboTax Support.  Possibly you have multiple Intuit accounts.

@gmott18