Looks like the private key cannot be read/decrypted. You could try to upload the certificate over the WebUI (after you cleared the one giving trouble) and see if that works better, or try to import the certificate without private key encryption to see if that makes any difference. Otherwise, it may be needed to check your key material which I would not recommend to share in a public forum.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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Original Message:
Sent: May 11, 2023 02:38 PM
From: patrick.sauerwein@web.de
Subject: IAP 505 802.1x Uplink
I tried a new test with priv key and cert in one file.
This is the entry in the debug log

Original Message:
Sent: May 11, 2023 02:16 PM
From: patrick.sauerwein@web.de
Subject: IAP 505 802.1x Uplink
Yes of course. This was my first try.
Original Message:
Sent: May 11, 2023 02:10 PM
From: DB86
Subject: IAP 505 802.1x Uplink
Did you combine the private key and certificate together into one PEM?
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Dustin Burns
Lead Mobility Engineer @Worldcom Exchange, Inc.
ACCX 1271| ACMX 509| ACSP | ACDA | MVP Guru 2022-2023
If my post was useful accept solution and/or give kudos
Original Message:
Sent: May 11, 2023 01:57 PM
From: patrick.sauerwein@web.de
Subject: IAP 505 802.1x Uplink
Yes, i know this post, but i have tried several things. No one is working.
One cert with priv key and user part in one file like the description in the Aruba Instant User Guide.
Another test was the same as Florian describes in his post with one file for priv key and another file with user cert. The priv key was encrypted.
I can upload the CA part and the user part. When i check it with "sh ap1xca" i can see the rootCA, intermediate certificate and the user cert.
All certs are uploaded in PEM format.
But when i´m uploading the priv key, i can the with "sh log debug" the following error message:

Original Message:
Sent: May 11, 2023 11:05 AM
From: DB86
Subject: IAP 505 802.1x Uplink
Have you found this Blog post by Florian Baaske? Lots of great information here for AP authentication methods: https://www.flomain.de/2020/03/aruba-ap-authentication/
------------------------------
Dustin Burns
Lead Mobility Engineer @Worldcom Exchange, Inc.
ACCX 1271| ACMX 509| ACSP | ACDA | MVP Guru 2022-2023
If my post was useful accept solution and/or give kudos