TNHandShake--TermType Not Supported
Generally not ideal - need to define the right terminal type as Viewer doesn't not negotiate different types--you should only see this as you are testing a new Host Connection of setup.
Best approach is to check existing terminal emulator connection settings to see what the correct terminal type is.
For more help on terminal type selection, see: Terminal Type Help
When configuring, there are many options--generally for a 3270 or 5250 connection you need to select from the provided list. For and ASCII/VT host, there are many, many options even when looking at the DEC VT100...an older system may use a different text setting than you have for a terminal that Inventu Viewer supports...so just need to match the type.
Here are the standard ASCII types but note that you can select a custom and enter perhaps what was found in a working terminal emulator:
Here are the standard TN3270 types:
Here are the standard TN5250 Terminal Types: