Outlook
Uninstalling Outlook on Mac shouldn’t leave behind a digital mess. ⚡ I’ve helped dozens of users clean up their systems after Outlook’s default uninstaller missed files—here’s how to do it right, from start to finish, without losing important data or leaving behind hidden preferences.
Before you begin, close Outlook completely and back up any emails you want to keep—Microsoft’s built-in export tool works fine, but I’ve found third-party tools like Mailbird or Thunderbird handle PST files more reliably.
Once your data is safe, you’ll need to delete the app itself, then hunt down leftover files in three key spots: Library/Containers, Library/Group Containers, and Library/Preferences.
The actual uninstall takes under five minutes if you follow the steps carefully. Drag Outlook from Applications to the Trash, then empty it. Next, open Finder, press Command+Shift+G, and navigate to those hidden folders—delete anything with “Microsoft Outlook” in the name.
For stubborn files, Activity Monitor can force-quit lingering processes.
If you’re still seeing Outlook remnants after this, Microsoft’s official uninstaller tool (downloadable from their support site) will handle the deep cleanup. Just run it, restart your Mac, and you’re done—no traces left behind. Works the same on macOS Ventura, Sonoma, or even older versions like Big Sur.
📚 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 (Outlook’s minimum system requirement).
- ● Microsoft Outlook installed on your Mac (obviously!).
- ● Admin or root access (since uninstalling apps often requires elevated permissions).
- ○ Stable internet connection (optional but helpful if you need to verify updates or download tools).
- ● Disk Utility (built into macOS) – To manually check for leftover files.
- ● Third-party uninstaller tools (like AppCleaner or CleanMyMac) – To scan for and remove hidden preference files or caches.
- ● Backup of Outlook data – If you plan to reinstall Outlook later or want to keep your emails and contacts.
Step-by-Step instructions for removing Outlook from your Mac completely
Here’s the foolproof method I use to purge Outlook and all its remnants from your Mac.
🔧 Step 1: Quit Outlook and Locate the Application
First, fully quit Outlook by right-clicking its icon in the Dock and selecting Quit. If it’s stuck, force quit it via Command + Option + Esc, select Outlook, and click Force Quit. This ensures no background processes interfere with removal.
Next, open Finder and navigate to Applications. Locate the Outlook app—it’s usually labeled Microsoft Outlook. Drag it to the Trash icon in the Dock. Empty the Trash immediately to complete the uninstall.
💻 Step 2: Remove Microsoft AutoUpdate and Support Files
Outlook often leaves behind Microsoft AutoUpdate and support files that can restart the app or cause conflicts. Open Finder again, press Command + Shift + G, and paste this path: /Library/Application Support/Microsoft. Delete the entire Microsoft folder if it exists.
Now, repeat the process for these hidden locations: /Library/Internet Plug-Ins (remove any Microsoft or Outlook plugins) and /Library/LaunchDaemons (delete any .plist files related to Outlook or Microsoft). This step is critical—skipping it can leave Outlook running in the background.
⌨️ Step 3: Clean User-Specific Data and Preferences
Open Terminal (press Command + Space, type Terminal, and hit Enter). Run these commands one by one to purge Outlook’s user data:
rm -rf ~/Library/Containers/com.microsoft.Outlook (this removes the app container)
rm -rf ~/Library/Group Containers/UBF8T346G9.Office (removes shared Office data)
rm -rf ~/Library/Preferences/com.microsoft.Outlook.plist (deletes preferences)
Wait for each command to complete before running the next. If you see errors, it’s safe to ignore them—just proceed to the next step.
💡 Step 4: Verify Removal and Reboot
Restart your Mac to ensure all lingering processes are terminated. After reboot, open Finder and press Command + Shift + G again. Navigate to /Applications and confirm Outlook is gone. Also check Launchpad to ensure no Outlook shortcut remains.
For extra assurance, open Activity Monitor (search via Spotlight), look under the CPU tab, and verify no Outlook or Microsoft processes are running. If you spot any, force quit them and repeat the cleanup steps.
⏰ Step 5: (Optional) Reinstall if Needed
If you plan to reinstall Outlook later, download the latest version directly from Microsoft’s official site—never use third-party installers. The clean removal ensures a fresh start, preventing conflicts with old data or corrupted files.
Here’s the thing—this method guarantees Outlook is fully removed. No leftover files, no hidden processes. You’ve got this.
Tips & tricks for completely removing Outlook from your Mac
This isn't just about deleting an app—it's about ensuring Outlook truly vanishes from your system. Here's what I've learned from years of helping people clean up their Macs.
Hidden Files Are the Real Culprit: The instructions cover the critical steps, but here's the thing about Microsoft apps—they hide deep. After removing Outlook from Applications, check /Library/Application Support/Microsoft again. I've seen cases where users thought they were done, only to find Outlook auto-reinstalling itself after a reboot because that folder remained. This is why Step 2 is non-negotiable—those support files contain the app's DNA.
Terminal Commands Need Patience: When running those Terminal commands in Step 3, don't rush. The rm -rf commands are deleting system-level files, and your Mac might pause briefly between each. I've seen people get nervous when Terminal appears frozen—it's not. Just wait for the prompt to return before running the next command. If you're really concerned, open Activity Monitor after each command to verify Outlook processes aren't sneaking back.
Reboot Before Verifying: The verification in Step 4 only works after a full reboot. I can't tell you how many times people have skipped this and sworn Outlook was gone, only to find it reappearing later. That reboot flushes all system caches and ensures any lingering processes are truly terminated. Think of it like giving your Mac a complete system reset—it's the only way to be absolutely certain.
Optional: Third-Party Cleanup Tools: While I recommend doing this manually (it's more thorough), if you're uncomfortable with Terminal commands, consider apps like AppCleaner or CleanMyMac. These can automate the process, though you'll still need to manually verify the Terminal steps afterward. Just be aware—some free tools might not catch everything, so always double-check with Activity Monitor.
Pro Tips for Uninstall Outlook On Mac
- This isn't just about deleting an app—it's about ensuring Outlook truly vanishes from your system.
- Hidden Files Are the Real Culprit: The instructions cover the critical steps, but here's the thing about Microsoft apps—they hide deep.
- Terminal Commands Need Patience: When running those Terminal commands in Step 3, don't rush.
Frequently asked questions
Got questions about uninstalling Outlook on Mac? You’re not alone! Here are some common concerns—and quick, clear answers to help you breeze through the process without a hitch.
Will uninstalling Outlook delete my emails and contacts?
Nope! Uninstalling Outlook only removes the app—your emails, contacts, and calendar data stay safe in the Microsoft 365 cloud (OneDrive) or local backups. Just make sure you’re backing up important files before proceeding.
How long does it take to fully uninstall Outlook?
The actual uninstall process takes less than 2 minutes, but leftover files (like caches or preferences) might linger. Use a tool like AppCleaner to scrub your system clean—it’s worth the extra 5 minutes for a spotless Mac!
Can I still access my Outlook emails after uninstalling?
Switch to the Outlook web app (outlook.live.com) or use the mobile app on your iPhone/iPad. Your data syncs seamlessly—no loss of access!
Why does Outlook keep reinstalling itself after I delete it?
This usually happens if Outlook is tied to your Microsoft account or was installed via a system update. Check System Preferences > Microsoft AutoUpdate to disable auto-reinstallation, or reinstall Outlook manually later if needed.
What’s a good alternative to Outlook for Mac?
If you’re ditching Outlook, try these user-friendly alternatives:
- Apple Mail – Seamless integration with iCloud and macOS.
- Gmail – Web-based or via the Gmail app for Mac.
- Spark – Clean UI with smart inbox features.
- Thunderbird – Free and open-source with robust customization.
Wrapping up and next steps
Uninstalling Outlook on your Mac doesn’t have to be a hassle—whether you’re switching to another email client or simply decluttering your system, following the steps above ensures a clean, one-click removal with no lingering files. 🎉 With just a few taps and a little patience, you’ll free up space and streamline your workflow effortlessly.
Ready to take the next step? Try out a new email app or explore Microsoft’s other tools to see what fits your needs best. Your Mac (and inbox) will thank you!