Unreadable characters received when opening an ExpertAssist remote session (4304694)

When creating an ExpertAssist session, the console shows unreadable characters, or no text at all is shown. 

So far there are two different root causes.

Cause # 1:

There is an encryption error or the connection is not secure, The Transport option under the Security section shows Clear-Text instead of Secure

Cause # 2:

The anti-virus exceptions for Expert Assist are not in place in the user machine.

Resolution for Cause #1:

Use https:// header to create the ExpertAssist session with the remote computer, the connection will be secure and the encryption will be correct.

Resolution for Cause #2:

Apply and verify the Anti-Virus exceptions for Expert Assist are set in the user machines. 

The Anti-Virus exceptions for Expert Assist can be found here.