# Browser closes connection with SUM

Symptom

The Chrome or Internet Explorer browser closes the connection with SUM, but leaves SUM running.

Cause

The browsers Internet Explorer and Chrome might disconnect from a SUM connection session.

Action

1. Open a terminal window, and then navigate to the directory from where SUM was launched.
2. Type the command `smartupdate /shutdownengine` (Windows).
3. Relaunch SUM.