[NAME]  -  Please install / update SupportAssist Client to its latest version 3.0.2.48. It has the fix for sleep issue which you had reported.  Thanks, Dell - Kumar #iwork4dell  
Since I got the new support assist a few months ago my computer does not go to sleep as it is programmed to.   I am running latest W10 prof. version but this started right after the new support assist agent was installed on an earlier version of W10 prof  When I do a powercfg check I see that it is this agent that is causing the computer to stay awake.  I can override it but it means that each time I run the support assist agent I am back to square1.  Hopefully this can be corrected soon.  The agent is a good tool but it does not have to override the computer's power options!  The version of support assist before this did not do this, I could use it to check the computer but it did not make null the power options I set..  The new version is a bit too intrusive.  Checking the system is one thing, overriding is a bit too much since what is being overridden is something that is needed--sleep when idle!  And by the way the power settings for sleep are those recommended by Dell. If anyone reading this 1.knows why this is happening and /or 2.knows of a fix short of uninstalling support assist agent I would be interested.  Thank you.
Dell support assist agent and sleep