I just installed the latest updates on my IMac, now nothing is working???

Try the following:

▷ Update macOS.

▷ Try Safe Mode.

▷ Use Apple Diagnostics to test your Mac.

If that does not help, then get expert service and support at the Genius Bar.



• Call Apple Support at 1-800-APLCARE or get help here.
• Chat using Messages. 

Please read the following user tip and restate your question/problem in detail: 

     Writing an Effective Apple Support Communities Question - Apple Community

Describe in detail what's not working, what happens when you try to use them, etc.

Have you installed and run any "cleaning", "optimizing", "speed-up", anti-virus or VPN apps on your Mac?