Step 1: User keyboard to input on “CTRL-ALT-DELETE” (please use CTRL+ALT+END if using a remote desktop)
Step 1 screenshot.
Step 2: Click on "Task Manager"
Step 2 screenshot.
Step 3: Find outlook in the list
Step 3 screenshot.
Step 4: User left click on outlook
Step 4 screenshot.
Step 5: Click End task
Step 5 screenshot.