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Stories from a new Synology user – DSM Cloud Sync: error connecting to Backblaze B2 with encryption

Cloudsync does a shit job of communicating helpful errors. When setting up a new Backblaze configuration with encryption enabled, this was the error:

Nothing in UI tools gave me more information, so I ssh'ed in and blindly searched for logs. Turns out the problem is really obvious when you find the actual error. In /var/log/messages this appeared:

2020-04-30T15:15:54-07:00 disko synoscgi_SYNO.CloudSync_1_create_link[29776]: [ERROR] b2-protocol.cpp(1656): B2Protocol: Failed to download file (https://f001.backblazeb2.com/file/my-backups/%40SynologyCloudSync/cloudsync_encrypt.info), error(403), msg({
  "code": "download_cap_exceeded",
  "message": "Cannot download file, download bandwidth or transaction (Class B) cap exceeded. See the Caps & Alerts page to increase your cap.",
  "status": 403
})

Easy fix in the BackBlaze config, but give us a "show raw error" button Synology please.

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