The popups actually come from PuttyNG. You need to change the putty options
- The popups actually come from PuttyNG. You need to change the putty options under tools-> options-> advanced.
- Relevant options are setting Session->”Close window on exit” to Always,
- enabling Connection->”Enable TCP keepalives” and
- setting Connection->”Seconds between keepalives” to more than 0.
- Remember to save the PuttyNG settings as “Default Settings” in Session->”Saved Sessions”.
Step 1-

Step 2

Step 3

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