Activity Monitor is one of those essential applications that I use frequently. Activity Monitor has a five-category tabs at the top of the Activity Monitor window: CPU, Memory, Energy, Disk, Network, and Cache. Each of these main categories includes subcategories called columns.
Sometime you may realize that some or all of the columns items are disappeared. Does Activity Monitor not show any columns? If you are having this problem, this short article explains how you can bring back the column items in the Activity Monitor app.
Please try each step one at a time until you resolve your issue.
- Let us first state the obvious. As you probably know, you can add or remove columns by choosing View > Columns from the menu bar. Are columns selected? If not, select them and this will fix the issue.
- Still, columns are missing? We will delete the Activity Monitor app preferences. Here is how:
- First, quit the Activity Monitor app if it is running
- Go to the Finder of Mac OS
- Click the Go menu
- Click the Go To Folder menu (shurtcut: Command+Shift+G)
- This will open a window. In this window, enter the following command and click Go.
- ~/Library/Preferences/com.apple.ActivityMonitor.plist
- This will open the Preferences window with com.apple.ActivityMonitor.plist selected.
- Delete this file by moving it to the Trash
- Now open Activity Monitor and check if columns are there.
See also: Mac Spotlight Search Not Working?
Thank you for this info. Worked like a charm.
Worked perfectly. Thanks. It was driving me nuts. I knew it was in my profile because another user account on this machine has the default settings.
Worked. Thank you!
Worked perfectly, thank you!
what does one do when the search for that plist file comes up with a”Cannot Be Found” result.
I used the terminal approach as I am often doing things in the termiinal. Allow me to be the first to tip my hat to you in 2021. Well done, sir/madam!
Works like a champ. Thank you!
Perfect! Thanks – not having the columns was driving me up the wall
Please help, this only works once. Every time the MAC sleeps it goes back. I ca not delete the file as it says “Permission denied”
Any ideas, thanks very much
Be sure to quit the monitor first with command q or use the menu to quit. Clicking the red point to close is not enough.
If that does not help,
use afterwards the terminal and remove as root with the command
sudo rm ~/Library/Preferences/com.apple.ActivityMonitor.plist
it does this every time i get a major OS update.
Apple should add in the update to clear that file every time.
Chuck