system crashes when i open App Store

Are there any AntiVirus, Disk Cleaner, Optimizers, Un-installers, etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation. The The Built in Security  is all that is required.

jasiii wrote:

when i click on App Store my system totally crashes (black screen). this has happened twice now since i updated to 12.0.1 any suggestions ??

Thanks

Jim Sterling

If no resolve—

\sign out of iCloud and back in again

Sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV or Mac

https://support.apple.com/en-gb/HT208242

Disable AntiVirus software ? If one is using this software - it is a waste of computer resources and ones money for an non-existent issue affecting macOS

There are no known Windows-like Viruses in the wild that self replicate and affect macOS, because of the underling UNIX  Foundation and Permission Limitation. 

That is not the same as Removal as per the Developers Instructions.

To add to P. Phillip's warning: there is no reason to ever install or run any 3rd party "cleaning", "optimizing", "speed-up", anti-virus, VPN or security apps on your Mac.  This user tip describes what you need to know and do in order to protect your Mac: Effective defenses against malware and other threats - Apple Community.  

There are no known viruses, i.e. self propagating, for Macs.  There are, however, adware and malware which require the user to install although unwittingly most of the time thru sneaky links, etc.   

Anti Virus developers try to group all types as viruses into their ad campaigns of fear.  They do a poor job of the detecting and isolating the adware and malware.  Since there are no viruses these apps use up a lot of system resources searching for what is non-existent and adversely affect system and app performance.

There is one app, Malwarebytes, which was developed by a long time contributor to these forums and a highly respected member of the computer security community, that is desshoigned solely to seek out adware and known malware and remove it.  The free version is more than adequate for most users.  

Also, unless you're using a true VPN tunnel, such as between you and your employer's or bank's servers, they are useless from a privacy standpoint.  Read these two articles: Public VPN's are anything but private and Former Malware Distributor Kape Technologies Now Owns ExpressVPN, CyberGhost, Private Internet Access, Zenmate, and a Collection of VPN “Review” Websites.  However, that being said one of the most respected contributors to these forums and a respected developer has reported favorable about NordVPN.  So it may be more secure than most of the other public VPNs. So if you must use one consider it.