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?
Kudos. First time that first result works perfectly.
Thanks a lot! 🙂
Thanks a lot, saved me a headache.
working again!!
Thanx!
Worked for me too (macOS Catalina 10.15.5, 12/8/2020).
Thanks
Thank you so much. It’s working now!
Bingo – thanks!
Thanks. Worked perfectly!
Thanks a bunch! Deleting the file Helped me solve this
Thanks very much – same as the other posts, this fix works.
Worked for me as well!
Second way did it for me, brilliant!
Thank you, thank you, thank you! This has been bugging me for months! 😉
Thank you so much. Five star!
Thanks, deleting the file returned the columns.
Great share
Thank you! This fixed that annoying problem and even I could easily follow the instructions!
Amazing, dealing with this all morning and now thanks to your info it is working !!! thank you very much!!! U R The man!
thanx it worked for me too. 2020/06
Thanks so much. Seems like it got messed up after OS update.
Thanks! Preference file delete worked for me (13Jun2020)!