@helpful-vegetable-35581 Yet any idea if I can make it work now?

var blob = new ZipBlob(
                "dotnetzip",
                new ZipBlobArgs(
                    resourceGroupName: resourceGroup.Name,
                    storageAccountName: storageAccount.Name,
                    storageContainerName: container.Name,
                    type: IO "block",
                    content: IO "???"
                ));

Seems to fail with

An assertion has failed

with whatever I put into

content

.