[SOLVED] Failed to HEAD for download: Unknown 401 (401 unknown)

Suspected Bug
1

Can we please re-open this thread? I have an update

2

Here's the update:

It appears that this bug occurs when the Backblaze B2 API key's permissions are:

listBuckets, listFiles, writeFiles

It appears that this bug does not occur when the Backblaze B2 API key's permission are:

readFiles, writeFiles

Therefore, if rclone gives you this 401 error when trying to upload to BackBlaze B2, try adding the readFiles capability to your API key.