Application is hosted in Web Farm Scenario. I dont have an option to persist keys for dataprotection() in Database. I am not able to Persist the Key file in blob storage.

I have referred documentation and used these lines of code to store keyfile in blob.

builder.Services.AddDataProtection().PersistKeysToAzureBlobStorage('blob-sas-uri')
.ProtectKeysWithAzureKeyVault('keyvault identifier')

When i run the application I am getting the following error.

RequestFailedException: The resource doesn't support specified Http Verb.
 ErrorCode: UnsupportedHttpVerb Content:
Azure.Storage.Blobs.BlockBlobRestClient.Upload(long contentLength, Stream body, Nullable<int> timeout, byte[] transactionalContentMD5, string blobContentType, string blobContentEncoding, string blobContentLanguage,...

Am I missing any configuration in Azure portal ?

Thanks in Advance.