slack.exe

Application ProcessSlack Technologies, LLC

Also called slack

Slack Technologies, LLCApplication

Slack's Windows desktop client. Extra slack.exe rows are Electron helpers, not extra workspaces you installed by hand.

What you need to know

This is the Slack desktop client. Teams is a different process and a different vendor.

slack.exe is Electron Slack. Several copies are GPU and renderer processes. It is not ms-teams.exe and it is not Outlook.

Safe?: Yes, from the Slack app
Heavy on RAM?: Workspaces and Electron, yes
Same as Teams?: No. Different vendor and exe

Feex says

If Slack is the memory number I notice on Monday morning, I would close extra workspaces before I buy RAM. The process list is doing Electron things.

What is slack.exe?

slack.exe is the Slack desktop application. It is Chromium-based Electron. The website in a browser is a different process name entirely.

What does it do?

It keeps websocket connections to workspaces, shows notifications, and can stay in the tray after the window closes.

Why is it running?

You signed into Slack or Windows restored the window. A slack.exe from a "desktop gadget" site is not the Salesforce-owned client.

Why are there multiple copies?

Electron GPU and renderer processes share the image name. Slack Process Manager inside the app is the useful split.

Is it safe?

Usually safe

A signed Slack build under Local\slack is expected. slack.exe in a zip next to a crack is not.

A legitimate copy normally runs from:

C:\Users\<you>\AppData\Local\slack\slack.exe

Per-user Electron install
Publisher: Slack Technologies
Not Teams

Can I end it?

Drops notifications until you reopen

Ending slack.exe signs that client out of the tray. You will miss mentions until it starts again. It does not delete the workspace.

Can I remove it?

Uninstall Slack

Use Settings > Apps. Deleting slack.exe leaves the updater and cached workspaces.

Should it start with Windows?

Slack can launch hidden in the tray. That is a Slack preference, not a Windows service.

Normal resource behavior

These are contextual labels, not universal averages.

CPU: Huddles, huddle video, and huge channels
Memory: Grows with workspace count
Disk: Cache under AppData
Network: Always-on for messages

File information

slack.exe file information
Executable name	slack.exe
Common legitimate path	C:\Users\<you>\AppData\Local\slack\slack.exe
Publisher	Slack Technologies, LLC
Signature expectation	Signed by Slack Technologies, LLC

Common problems

RAM after many workspaces

Slack documents cache reset. That is an app fix, not a Windows Search rebuild.

People end all Electron apps at once

Code.exe and slack.exe are different products that happen to share a framework.

Troubleshooting

Diagnose before you change anything destructive.

Reset the Slack cache from Slack Help

Do not delete AppData blindly while the app is open.

Check Launch Slack on login in preferences

That checkbox is the startup story.

Technical details

slack.exe technical details
Image name	slack.exe
Framework	Electron

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. How we research.

Slack Help: desktop app · Official client
Slack Help: app performance · Hardware and cache
Foxhole process map · First-party samples on Windows PCs. Not a lab benchmark.

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