BloomUpdated 23 October 2026 · 4 min read
Why apps ask for it
macOS protects the ability to control your Mac on your behalf: pressing keys, clicking, moving windows and reading what's on screen. Window managers, launchers, clipboard tools and apps like Bloom need some of this to work, so macOS asks you to allow it first. It's a one-time switch per app.
Only allow it for apps you trust. A good app explains what it uses the access for. Bloom, for example, uses it only to press the shortcuts you pick.
How to allow it
- Open System Settings and choose Privacy & Security.
- Click Accessibility. On macOS 27 this section is named Device Control and Data Access.
- Find the app and turn on its switch. You may need to enter your password or use Touch ID.
- If the app isn't in the list, click +, choose it from Applications, then turn it on.
When it still doesn't work
Turn it off and on again
After an app updates, macOS can keep showing the switch as on while the new version isn't actually allowed. Turn the switch off, then on again, and restart the app.
Remove and re-add the app
Select the app in the list, click − to remove it, then add it again with +.
Reset it from Terminal
As a last resort you can clear the permission for one app and start fresh. Replace the identifier with the app's bundle ID, for example Bloom's:
tccutil reset Accessibility com.mayank.bloom
Then open the app again and allow access when it asks.
Managed Macs
On a work or school Mac, your IT team may control these settings. If the switch is greyed out, ask them to allow the app.