Apple MDM CSR gives error Certificate signature verification failed because the signature is invalid

Question

Created Sep ’17

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I am getting Certificate Signature Verification failed error. The description is, Certificate Signature Verification failed because the signature is invalid. The CSR used to work fine until now. I recently updated my Server SSL Certificate, has it to do anything with that?

Answered by binoli in 266105022

It had nothing to do with the SSL Certifiacte.SSL certificate didn't change anything.

The problem was I updated my MDM Certificate and the signing certificate was using old MDM Certificate. I had to change the signing certificate to reflect the new MDM certificate

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Answer 1

KMT OP

Sep ’17

Did you re-sign against the new server or MDM cert?

1

Answer 2

cap_sol OP

Jan ’19

I've also have just renewed/updated our MDM CSR certificate and I kept the old MDM CSR in the Apple site "iOS Certificates (Production)" as fallback. For a while after the update we were able to create push certifcates through the Apple Push Certificates Portal but now we start getting the message "Certificate Signature Verification faile - Certificate Signature Verification failed because the signature is invalid."

Can the cause to this problem be that we have kept the old MDM CSR and would the problem be fixed by deleting the old MDM CSR certificate or is the problem somewhere else ?

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