View the original community article here
Last tested: Mar 27, 2019
There can be various reasons for this. At the most simple level:
- The user may have closed the browser page.
- The user may have put their computer to sleep or to away mode.
If queries seem to be getting killed after a consistent amount of time (like every 60 seconds), there may be a timeout set somewhere. This Help Center article has more info for that case.