I have an Inspiron 15-3567. I don't faithfully run Dell Support Assistant but begin getting the Windows 10 blue screen of death so I decided to run it. Everything worked except Hardware Scan. I disabled all anti-virus and malware programs but it still wouldn't work. After hours of trying different solutions found on the Internet, I came across the following recommendation in this community. (Wish I could give credit where credit is due but I didn't think to copy the contributor's information.) Windows Administrative tools-->Component Services--->Service(Local). Find "Dell Hardware Support" Right Click on it. "Restart" the service. That didn't fix my problem but it lead me to the cause of it. When I tried to restart the service, Windows 10 said it couldn't find the file. I downloaded Dell Support Assistant, uninstalled and reinstalled. I've only used it once but it worked.
Since June 2020, I have been unable to run Hardware Scan on Dell Support Assistant. This may correspond to the latest Windows 10 mega update. All other Support Assistant functions work fine. I have latest version of Dell Support installed. However, if I try to run similar process through Troubleshoot, same thing happens. Also it is unable to verify hardware.  Running Support Assistant with Norton Security temporarily turned off does not improve function
Unable to Run Hardware Scan on Dell Support Assistant