Freeing up space · Free Up Space wizard and button
Why is the Free Up Space Now button greyed out?
Short answer: It's greyed out while automatic actions are paused or the service is stopped. Resume or start them from the popover and the button becomes available again.
The button greys out while automatic actions are paused. Pausing stops Storage Studio from changing anything on its own, and Free Up Space Now belongs to that group because it moves and cleans files.
To use it again, resume automatic actions from the popover (the Pause button toggles back), or start the service if it's been stopped. The popover's status block shows Auto-actions as Enabled, Paused or Disabled so you can see which state you're in.
If you just want a look at what's using space without changing anything, open What's Using Space — it works while actions are paused.