Velero pods are running successfully , but backup is failing

[NaveedAhamedHN]

Backup is failing with the below error
time="2025-03-13T12:12:44Z" level=info msg="BackupStorageLocation is invalid, marking as unavailable" backup-storage-location=velero/default controller=backup-storage-location logSource="pkg/controller/backup_storage_location_controller.go:121"
time="2025-03-13T12:12:44Z" level=error msg="Current BackupStorageLocations available/unavailable/unknown: 0/1/0, BackupStorageLocation "default" is unavailable: rpc error: code = Unknown desc = unknown cloud: azure)" controller=backup-storage-location logSource="pkg/controller/backup_storage_location_controller.go:179"

Yaml file of Backup storage location looks as below, i am configuring for the very first time so any kind of support is help full.

kind: BackupStorageLocation
metadata:
  creationTimestamp: "2025-03-13T12:06:40Z"
  generation: 10
  labels:
    component: velero
  name: default
  namespace: velero
  resourceVersion: "45201662"
  uid: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
spec:
  config:
    resourceGroup: nbf-pprdpv-mule-aks-rg-01
    storageAccount: nbfaksmulveleropprod
    subscriptionId: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
    useAAD: "true"
  default: true
  objectStorage:
    bucket: nbfmulevelero
  provider: azure
status:
  lastValidationTime: "2025-03-13T12:14:44Z"
  message: 'BackupStorageLocation "default" is unavailable: rpc error: code = Unknown
    desc = unknown cloud: azure'
  phase: Unavailable

[CarlosArandaMelgar]

I have the same error

[blackpiglet]

There is not enough information to debug what happened.
Based on the BSL' status, it could be possible you are using a velero plugin not for Azure, and set the BSL's provider as azure.