On 4.17 rc.3/rc.5, install cluster with customer-managed key for storage account configured will fail.

install-config:
=======
platform:
  azure:
    customerManagedKey:
      keyVault:
        keyName: ci-op-b7b9151w-eca8b-key
        name: ci-op-b7b9151w-eca8b-kv
        resourceGroup: ci-op-b7b9151w-eca8b-rg
      userAssignedIdentityKey: ci-op-b7b9151w-eca8b-identity

Error
========  
level=info msg=Waiting up to 15m0s (until 7:01PM UTC) for network infrastructure to become ready...
level=info msg=Network infrastructure is ready
level=error msg=failed to fetch Cluster: failed to generate asset "Cluster": failed to create cluster: failed provisioning resources after infrastructure ready: failed to create blob container vhd: PUT https://management.azure.com/subscriptions/53b8f551-f0fc-4bea-8cba-6d1fefd54c8a/resourceGroups/ci-op-b7b9151w-eca8b-95g9d-rg/providers/Microsoft.Storage/storageAccounts/ciopb7b9151weca8b95g9dsa/blobServices/default/containers/vhd
level=error msg=--------------------------------------------------------------------------------
level=error msg=RESPONSE 400: 400 Bad Request
level=error msg=ERROR CODE: UnsupportedHeader
level=error msg=--------------------------------------------------------------------------------
level=error msg={
level=error msg=  "error": {
level=error msg=    "code": "UnsupportedHeader",
level=error msg=    "message": "One of the headers specified in the request is not supported.\nRequestId:7ca1ed39-d01c-0107-6f20-0d5e97000000\nTime:2024-09-22T18:49:25.9448932Z"
level=error msg=  }
level=error msg=}
level=error msg=--------------------------------------------------------------------------------
level=error
level=info msg=Shutting down local Cluster API controllers...
level=info msg=Stopped controller: Cluster API
level=info msg=Stopped controller: azure infrastructure provider
level=info msg=Stopped controller: azureaso infrastructure provider
level=info msg=Shutting down local Cluster API control plane...
level=info msg=Local Cluster API system has completed operations
Installer exit with code 4

4.17.0-rc.3/4.17.0-rc.5 

Always    

    1. set customerManagedKey in install-config
    2. create cluster
    3.
    

    installation failed

    installation succeeded.

Issue is introduced by https://github.com/openshift/installer/pull/8984 to fix bug https://issues.redhat.com/browse/OCPBUGS-41542.
https://github.com/openshift/installer/pull/9006 is the fix for this issue and already merged, but not included in 4.17.0-rc.3/4.17.0-rc.5.

The purpose of this bug is to add known issue in 4.17 RN, and the fix will be in the following 4.17.1 z-stream.