Randolph West shares the results of persistent, relentless experimentation:
This coincidentally has caused an issue if we are using Windows Task Scheduler to schedule the synchronization process, especially if we use a SAS (Shared Access Signature) token which can be quite long. What then happens is we have a command that is longer than Windows Task Scheduler allows, and the task will fail with a very unhelpful error message:
Task Scheduler failed to execute task "\AzureBlobStorageSync". Attempting to restart. Additional Data: Error Value: 2147942487.
Click through to see how Randolph fixed this problem, which created a new problem necessitating Randolph solve it as well.