topic Re: Configuring custom keys on TagExplorer error 91AE in NFC

Configuring custom keys on TagExplorer error 91AE

MG2 — Wed, 22 Mar 2023 12:40:26 GMT

Hello,

I would like to configure custom keys (0 to 4) on my NTAG 424 dna. I was able to configure key 00, however, when I want to configure key 01 I first successfully authenticate it, but when I click change key I get the error 91AE.

What does this error mean and how can I change the key?

Does it have anything to do with the fact that I already set a link on the tag before?

Also I'm not sure what to set under New KeyVersion, so I just set 01. Could that be an issue?

This is a screenshot of my configurations: https://imgur.com/a/

Kind regards,

Mia

Re: Configuring custom keys on TagExplorer error 91AE

KaiLi — Thu, 23 Mar 2023 02:03:36 GMT

Hello @MG2

Thanks for contacting us and interested in the NXP products.
As you know, NTAG 424 DNA is a secure product and your issue is related security document or code, so please establish an NDA with NXP by going to https://www.nxp.com/support/support:SUPPORTHOME and select "Request an NDA"
After the NDA is finished, just let me know and I can push you all documentation you need.

To update this case, you may reply by email.
To provide confidential information or attachments, you may add that online.

Please login to our NXP technical support portal:
https://support.nxp.com/s/case/5002p00002s4FkZAAU

The portal allows access to the full details of the case, including the previous communication.

Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.

Best regards,
Kelly
Technical Support
NXP Semiconductor

Re: Configuring custom keys on TagExplorer error 91AE

mimmolf — Wed, 21 May 2025 11:12:14 GMT

After writing my NTAG424 DNA using TagXplorer

I am not able to authenticate on NTAG Operations. The error is 91Ae.

I am not able to change any file settings. I tried to format NDEF but nothing change.

How can I recover this condition? What is the meaning of this error?

Thanks