How to stop this script

repeat
delay(.1)
tell application "System Events"
  repeat with appProc in (every application process whose visible is true)
    click (first button of every window of appProc whose role description is "minimize button")
  end repeat
end tell
end repeat

Why do you have 2 repeat loops?

try this


tell application "System Events"
	repeat with appProc in (every application process whose visible is true)
		delay 0.1
		click (first button of every window of appProc whose role description is "minimize button")
	end repeat
end tell

Why have any repeat loops ?

tell application "System Events" to tell every window of every process to set the value of attribute "AXMinimized" to true

AppleScript: 2.7
Browser: Safari 605.1.15
Operating System: macOS 10.13