This is the correct answer. Last month i had to use the service login to change invalid Mac Address on our P11.
This was in cooperation with IBM support, after the ACF file i got access.
Regards
Michel.
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Michel de Kraker
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Original Message:
Sent: Tue March 24, 2026 05:47 AM
From: Marc-Eric Kahle
Subject: ASMI: Service login Disabled
Hi,
again, that Service login disabled is the "Info" that there is no active Service login ACF file / created service login password available.
As long as you have no generated ACF file / service password, that will show disabled.
When the ACF certificate with the generate service login password is uploaded to the ASMI / eBMC, then the service login will show enabled:

The Service User itself is enable as you showed in the screen before.
I hope that helps.
Greetings
Marc-Eric
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Marc-Eric Kahle
PowerVS Compute Site Reliability Engineer
IBM Deutschland GmbH
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Original Message:
Sent: Mon March 23, 2026 12:26 PM
From: Robert Berendt
Subject: ASMI: Service login Disabled
Jim,
I think you may be assuming wrong.

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Robert Berendt IBMChampion
Business Systems Analyst, Lead
Dekko
Fort Wayne
Original Message:
Sent: Mon March 23, 2026 11:09 AM
From: Jim Rinn
Subject: ASMI: Service login Disabled
I assume you are talking about the user "service". Most likely is the "service" user has been disabled in the User Management area.
Use another administrative login such as admin to navigate to User Management and enable the "service" user name.
My P10s came with the "service" user enabled but we don't use HMC, not sure that matters. We manage our service processor thru ASMI or the Redfish API.
Worst case you might have to factory reset the service processor.