Horizon Windows 10

[blorenz]

Session negotiation failed. The zero client may not be compatible with the host session negotiation cipher settings.

[vJoeG]

Sometimes this problem occurs because some weaker encryption ciphers that were available in Horizon View 6.1 are now disabled in Horizon View 6.2 and later.

I've seen this issue hit Teradici zero clients. The problem is that the more preferred ciphers are not supported on Teradici firmware versions below 4.8. If you’re running clients with a firmware version below 4.8 then you will most likely run into this problem after upgrading to Horizon View 6.2 or later

Another temporary work around is to explicitly enable TLS 1.0, 1.1 and 1.2 on your connection servers and your desktop pools (your ‘gold’ base image)

See this KB on how to enable the protocols mentioned

Configuring security protocols on components to connect the View Client with desktops (2130798) | VM...

[HussamRabaya]

the current solution in your case is workaround

and since you are using Zero client ,get firmware from Teradici upgrade your Zero client to latest

what zero client you are using