TMG 2010 disable tls 1.0 and 1.1 - error 64

Hi

For security reasons we are disabling tls 1.0 and tls 1.1 in the webservers.

Disabling the tls 1.0 and tls 1.1 in windows 2019 (using IIS), then restarting, makes the website return error 64 with public names, publish by TMG.

If I access the internal webserver name, I can reach the website with no error.

For me the problem is in the TMG, for some reason cannot resolve the TLS.

note: in the TMG the tls 1.2 is active, because when i access the website in the browser indicates the connection encrypted of the type tls 1.2.

Can someone help please?

Best regards

Joaquim Costa