See if this helps it is a Windows Update Troubleshooter.

https://support.microsoft.com/en-us/help/4027322/windows-update-troubleshooter

Would SMB outbound be blocked in the firewall?

Try this.

Run Powershell as admin again
Post this following code in and press enter: Get-AppxPackage -allusers | foreach {Add-AppxPackage -register...

Also maybe see if you have a restore point you can go back to.

https://support.microsoft.com/en-us/help/12415/windows-10-recovery-options

Do you remember what package you removed with powershell or the command you used?

If you can try another device (TV) to see if it is the TV causing issues. If you only have one TV try other HDMI inputs. Possibly one that is working already. If that does not work try the cord...

Have you tried Safe Mode yet for windows defender? If you can get to it via there not sure if it will update, but at least run a scan with it.

Can someone explain this to me on what they mean be no longer being developed? Currently we have computers from windows 7 to 10 up to 1709 and a couple 10 boxes on 1803. All of these have Software...