Quick Answer
slack-updater.exe is safe. It's Slack's official updater that checks for, downloads, and applies Slack updates in the background to keep the app secure and current.
Is it a Virus?
NO - Safe
Must be in C:\Program Files\Slack Technologies\Slack\slack-updater.exe
Can I Disable?
YES
Disabling auto-update may leave Slack without automatic updates
What if it's not in Slack's folder?
It may be malware masquerading as updater—verify by location and signature
If slack-updater.exe runs outside Slack folders or without a valid signature, investigate promptly
What is slack-updater.exe?
slack-updater.exe is the updater component for the Slack desktop application. It runs in the background to check for new Slack versions, download updates, and apply them without interrupting your active work. It is typically launched by the Slack client or configured to start with Windows if you enable auto-start.
The updater coordinates with Slack's update server to fetch version data, download the package, and install it, often restarting Slack briefly. It runs as a separate process to isolate update tasks from the main UI.
Quick Fact: Slack’s updater uses signatures to verify update packages and minimizes disruption by applying updates in the background when possible.
Types of Slack Processes
- Updater Process: Checks Slack for new versions and downloads update packages in the background
- Background Launcher: Starts update tasks when Slack launches or on a scheduled interval
- Integrity Validator: Verifies update package signatures before installation
Is slack-updater.exe Safe?
Yes, slack-updater.exe is safe when it originates from Slack Technologies, LLC and is located in the official Slack folders.
Is slack-updater.exe a Virus or Malware?
The real slack-updater.exe is NOT a virus. Malware may masquerade with similar names. Use path checks and signature verification.
How to Tell if slack-updater.exe is Legitimate or Malware
- File Location:: Must be in
C:\Program Files\Slack Technologies\Slack\slack-updater.exe or C:\Program Files (x86)\Slack Technologies\Slack\slack-updater.exe. Any other location is suspicious.
- Digital Signature:: Right-click the file in Explorer -> Properties -> Digital Signatures. Should show "Slack Technologies, LLC" as the signer.
- Resource Usage:: Normal usage is 2-12% CPU and 50-150 MB memory. Unusually high resource usage when Slack is idle is suspicious.
- Behavior:: The updater should only run when Slack is installed and Slack is updating. Persistent background activity when Slack is closed may indicate malware.
Red Flags: If slack-updater.exe exists outside typical Slack folders (e.g., Temp, AppData\Local\Temp), runs when Slack is closed, has no digital signature, or shows unexpected network activity, scan for malware. Look for similarly named files like "slack-updater32.exe" or "slack-updater.exe.bak" from untrusted sources.
Why Is slack-updater.exe Running on My PC?
slack-updater.exe runs to manage Slack updates, ensuring you have the latest features and security fixes. It often starts when Slack is opened or when Windows starts if auto-update is enabled.
Reasons it's running:
- Active Slack Use: Slack is open or recently used; the updater checks for new versions in the background to keep you current.
- Automatic Updates Enabled: Auto-update is enabled, so the updater periodically checks and downloads updates without user action.
- Startup Launch: Slack is configured to launch the updater at Windows startup to ensure updates are ready when Slack runs.
- Background Sync: The updater may coordinate with Slack’s background services to ensure integrity of downloaded packages.
- Update Release Schedule: Slack releases updates on a cadence that can trigger updater activity even when Slack isn’t actively used.
Can I Disable or Remove slack-updater.exe?
Yes, you can disable slack-updater.exe. This will stop automatic Slack updates and might leave Slack out-of-date; you can still update Slack manually using the official installer.
How to Stop slack-updater.exe
- End Updater Process: Open Windows Task Manager (Ctrl+Shift+Esc) → Processes → locate slack-updater.exe → End Task
- Disable Startup: Task Manager → Startup tab → locate Slack or slack-updater-related entry → Disable
- Disable Auto-Update in Slack: Open Slack → Preferences (Settings) → Advanced → Update → turn off automatic updates if available
- Manual Updates: If you need updates, download the latest Slack installer from https://slack.com/downloads/windows and run it
- Re-enable When Needed: To re-enable, enable the startup entry again and relaunch Slack
How to Uninstall Slack
- ✔ Windows Settings -> Apps -> Apps & Features -> Slack -> Uninstall
- ✔ Control Panel -> Programs -> Uninstall a program -> Slack -> Uninstall
- ✔ After uninstall, consider removing residual Slack updater folders in AppData if present and reinstall Slack from official site
Common Problems: Update Issues and Resource Usage
If slack-updater.exe is consuming excessive resources or failing to update, try the following common fixes.
Common Causes & Solutions
- Updater stuck or multiple instances running: End all slack-updater.exe processes in Task Manager and restart Slack
- Poor network connectivity: Verify internet access, retry update, or use a wired connection
- Corrupted update package: Delete the failed package cache and re-run update via the official installer
- Antivirus interference: Whitelist slack-updater.exe in security software and reattempt update
- Outdated Slack version: Install the latest Slack installer from slack.com to refresh updater components
- Background process conflicts: Close other Slack-related processes and retry the update
Quick Fixes:
1. 1. Open Windows Task Manager and terminate any stuck slack-updater.exe processes
2. 2. Update Slack manually by downloading the latest installer from https://slack.com/downloads/windows and running it
3. 3. In Slack, disable automatic updates if available and restart Slack
4. 4. Restart Windows to ensure changes take effect
5. 5. Ensure antivirus software isn’t blocking slack-updater.exe
Frequently Asked Questions
Is slack-updater.exe a virus?
No, the legitimate slack-updater.exe is a core component of Slack’s auto-update system. Verify its path to be in C:\Program Files\Slack Technologies\Slack\slack-updater.exe and ensure it is digitally signed by Slack Technologies, LLC.
Why does slack-updater.exe run when Slack is open?
Slack uses the updater to check for new versions and apply updates in the background to minimize disruption while you work.
Can I disable slack-updater.exe?
Yes, you can disable automatic updates, but Slack may not receive security and feature updates until you update it manually.
Where is slack-updater.exe located?
Common legitimate locations include C:\Program Files\Slack Technologies\Slack\slack-updater.exe or C:\Program Files (x86)\Slack Technologies\Slack\slack-updater.exe.
Will disabling Slack updates affect my account or messages?
Disabling updates does not affect your messages, but you may miss important security fixes and new features until you update Slack manually.
How do I know slack-updater.exe is legitimate?
Check the file path, verify a valid digital signature from Slack Technologies, LLC, and confirm that the file is located within official Slack folders on your system.