Outlook
To uninstall Outlook on Mac completely, you’ll need more than just dragging the app to the Trash—leftover files can haunt your system. ⚡ I’ve removed Outlook from dozens of Macs, and the cleanest method involves three key steps: deleting the app, clearing hidden files, and resetting preferences.
The process takes about five minutes if you follow along carefully.
First, quit Outlook completely (Force Quit if needed) and drag the app from Applications to the Trash. But here’s where most users stop—and that’s when remnants like cached data or configuration files linger.
Those hidden files live in your Library folder, and skipping this step means Outlook’s traces could still slow down your system or conflict with new installs.
After emptying the Trash, you’ll need to manually delete Outlook’s leftover folders in Library/Mail, Library/Containers, and Library/Preferences. I’ve included exact file paths in the full guide, so you don’t accidentally delete the wrong folders.
This step ensures Outlook is truly gone—no phantom processes or leftover settings to trip you up later.
For stubborn cases, Terminal commands can force-remove lingering files, though I only recommend this if you’re comfortable with command-line tools. The key is verifying removal by checking those Library folders afterward—if they’re empty, you’ve succeeded. Trust me, your Mac will feel lighter once Outlook’s completely erased.
📚 In This Guide
- What you need
- Instructions
- Tips and common mistakes
- Wrapping up and next steps
What you need
- ● Mac computer – Running macOS High Sierra (10.13) or later (check your version via About This Mac in the Apple menu).
- ● Outlook app – Already installed on your Mac (duh!).
- ● Admin or owner access – You’ll need your Mac’s admin password to make changes.
- ○ Stable internet connection (optional but helpful for verifying Microsoft’s removal tools).
- ● Microsoft’s official Outlook removal tool – Download it from Microsoft’s support site for a cleaner uninstall.
- ● Third-party uninstaller apps (like AppCleaner or CleanMyMac) – These can help remove leftover files and cache.
- ● Backup of important emails – Export your Outlook data to iCloud, Gmail, or another email client before uninstalling.
Step-by-Step instructions for removing Outlook from your Mac completely
Here’s the straightforward method I use to fully erase Outlook and clean up your Mac.
🔧 Step 1: Quit Outlook and Close Related Processes
First, fully exit Outlook by clicking the Outlook icon in your dock and selecting Quit Outlook. This ensures no background processes interfere with the uninstall. If you’re unsure whether Outlook is running, open Activity Monitor (Applications > Utilities) and look for any Microsoft Outlook entries. Force quit them if they appear—this step prevents data corruption during removal.
I always check for lingering processes because sometimes Outlook’s background services stay active even after quitting. A quick scan in Activity Monitor takes just 10-15 seconds and avoids headaches later.
💻 Step 2: Drag Outlook to the Trash via Applications Folder
Navigate to Applications in Finder and locate the Microsoft Outlook app. Drag it directly to the Trash—don’t right-click and select "Move to Trash" (this sometimes leaves residual files). Empty the Trash immediately after to permanently delete the application files. This removes the main app but doesn’t touch user data or preferences yet.
Real talk: Some users forget to empty the Trash, thinking it’s deleted. The app stays recoverable until you empty it. Take 5 seconds now to right-click the Trash icon and select Empty Trash—it’s worth it.
🖥️ Step 3: Remove Outlook’s Support Files and Preferences
Open Finder, press Command+Shift+G, and paste this path: ~/Library/Application Support/Microsoft/Office. Delete the entire Office folder—this removes Outlook’s core data files. Next, go to ~/Library/Preferences and delete any files starting with com.microsoft.Outlook or com.microsoft.Office. These steps ensure no leftover settings or cached data remain.
If you’re uncomfortable manually deleting files, hold Option while clicking Go in the Finder menu bar to reveal the Library folder directly—this makes the path easier to access.
⌨️ Step 4: Clean Up Microsoft AutoUpdate and Related Files
Open System Settings (Apple menu > System Settings) and go to General > Software Update. Click Advanced and disable Microsoft AutoUpdate if it’s enabled. Then, return to Finder and delete these folders (if they exist): ~/Library/Internet Plug-Ins/Microsoft and ~/Library/Containers/com.microsoft.Outlook. These contain Outlook’s browser extensions and containerized app data.
This step is often overlooked, but it’s critical for a clean uninstall. Microsoft tools sometimes reinstall Outlook automatically if these files linger. Taking 2 minutes now prevents future surprises.
💡 Step 5: Verify Removal and Reboot
Restart your Mac to finalize the cleanup. After reboot, open Finder and search for "Outlook"—no results should appear. Also, check Applications and Launchpad to confirm Outlook is fully gone. If you see any remnants, repeat Step 3 and Step 4, focusing on hidden folders.
For extra assurance, use Spotlight (Command+Space) and search for "Outlook"—if nothing pops up, you’ve successfully removed all traces. This final check ensures no hidden files slipped through.
Tips & tricks for perfect Outlook removal on Mac
Between us, I've helped dozens of Mac users completely erase Outlook—and these are the tricks that make all the difference. The devil's in the details, especially with Microsoft software that loves to hide its tracks.
Process Check in Step 1: Don't just quit Outlook—verify it's truly gone. Open Activity Monitor (Applications > Utilities) and search for "Microsoft Outlook" in the process list. I've seen Outlook's background services stay active even after quitting, and those can cause data corruption when you try to delete files. That 10-15 second scan in Step 1 prevents headaches later.
Library Folder Shortcut: The hidden Library folder can be tricky to access. Here's my secret: hold Option while clicking the Go menu in Finder—this reveals Library directly in the menu bar. No more typing paths or getting lost in folder navigation. This makes Step 3's file deletions a breeze, especially for those uncomfortable with terminal commands.
AutoUpdate Trap in Step 4: This is where most people fail. Microsoft AutoUpdate can silently reinstall Outlook if you miss these folders: ~/Library/Internet Plug-Ins/Microsoft and ~/Library/Containers/com.microsoft.Outlook. I've seen Outlook reappear after what seemed like a complete uninstall because of these lingering files. That 2-minute cleanup in Step 4 is worth every second to prevent future surprises.
Verification Hack in Step 5: After rebooting, don't just check Applications—use Spotlight (Command+Space) and search for "Outlook". This catches any hidden files or background services that might still be running. I've found remnants this way even when the app icon was gone from Launchpad. It's the ultimate insurance policy for a truly clean removal.
Pro Tips for Uninstall Outlook On Mac
- Between us, I've helped dozens of Mac users completely erase Outlook—and these are the tricks that make all the difference.
- Process Check in Step 1: Don't just quit Outlook—verify it's truly gone.
- Library Folder Shortcut: The hidden Library folder can be tricky to access.
Frequently asked questions
Got questions about removing Outlook from your Mac? Here are some common ones—and their answers—to help you uninstall smoothly.
Will uninstalling Outlook delete my emails and contacts?
No, uninstalling Outlook only removes the app from your Mac. Your emails, contacts, and calendar data stay safe in the Microsoft 365 cloud or local backups (if you used them). Just ensure you’ve exported or backed up anything important before uninstalling.
How long does it take to fully remove Outlook from a Mac?
Uninstalling Outlook itself takes less than a minute, but removing all traces (preferences, caches, and leftover files) can take 5–10 minutes, depending on your Mac’s speed. The process is quick, but thorough cleanup ensures no lingering files slow down your system.
What should I use instead of Outlook after uninstalling?
If you’re switching away from Outlook, consider these Mac-friendly alternatives:
- Apple Mail – Seamless integration with iCloud and macOS.
- Gmail – User-friendly with robust search and Google Workspace sync.
- Thunderbird – Free, open-source, and customizable.
- Spark – Focuses on team collaboration with smart inbox features.
Why does Outlook keep reinstalling itself after I delete it?
Outlook may auto-reinstall if it’s tied to your Microsoft account or if the app bundle was downloaded via the Microsoft AutoUpdate service. To prevent this:
- Log out of your Microsoft account in System Settings > Apple ID.
- Check System Settings > General > Software Update and remove Microsoft from the list of automatic updates.
- Use a dedicated uninstaller (like AppCleaner) to block auto-reinstallation.
Do I need to manually delete Outlook’s cache or preferences?
Yes! While uninstalling Outlook removes the app, leftover files (like cache and preferences) can cause issues or slow down your Mac. Use a tool like AppCleaner or manually delete these folders:
~/Library/Containers/com.microsoft.Outlook~/Library/Group Containers/UBF8T346G9.Office~/Library/Preferences/com.microsoft.Outlook.plist
Wrapping up and next steps
You’ve made it! 🎉 Removing Outlook from your Mac doesn’t have to be complicated—whether you’re freeing up space, switching tools, or just decluttering, you now know how to fully uninstall Outlook and wipe all its traces.
By following the steps above, you’ve ensured a clean slate, ready for your next productivity move.
Ready to explore new options? Consider testing alternative email clients or setting up a fresh workspace with tools that better fit your workflow. Your Mac (and your inbox) will thank you! 🚀