I have fixed the SChannel errors.
I started with unchecking all of these in Internet Options/Advanced.
SSL 2.0
SSL 3.0
TLS 1.0
TLS 1.1
TLS 1.2
This worked to fix the error but my email images were now all the small black box with a X inside.
Not what I wanted.
So I checked them one at a time & tested with a reboot in between.
All need to be checked.
But that is not all.
I had to go into the Registry & change the settings.
This made the settings permanent.
This is the registry location.
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Control\SecurityProviders\SCHANNEL\Protocols
Two days now & NO SChannel; errors.
This could make my OS less secure.
I use Avast email scanner & I do not use IE or Edge.
So I believe I"m OK