Ever since about 6am Eastern today, my dataset refreshes have been failing and the reports are just spinning - no errors, just spinning like it's trying to load the data.
Same/similar issue here...
As of this morning, attempting to publish a report and corresponding dataset that has worked fine for the past 6 months now takes a very long time to finally result in the following message:
Checking the dataset in my workspace:
...and the corresponding report, when accessed via the online service, just 'spins' indefinitely.