Slack Login: How to Sign In and Fix Common Problems

To log in to Slack, open the Slack app or go to slack.com/signin, enter your work email address, and confirm it’s you with the code Slack emails you, a passkey, Google or Apple sign-in, or your company’s single sign-on (SSO). Slack then shows the workspaces linked to that email, and you choose the one you want to open.

That sounds simple, and most days it is. Problems start when you don’t know which email your workspace uses, the confirmation code never arrives, your company switched to SSO, or Slack simply refuses to load. This guide walks through every way to sign in, then works through the most common Slack login problems one by one, based on Slack’s own help centre.

How Slack sign-in works now

Years ago, signing in to Slack meant typing your team’s web address, then an email and a password for that specific workspace. Today Slack is built around your email address. You prove you own the email, and Slack shows you every workspace connected to it. According to Slack’s sign-in guide, you can confirm your identity in several ways:

Method	How it works	Who it’s for
Email confirmation code	Slack emails you a code to type in	Most users; no password needed
Passkey	Confirm with Face ID, fingerprint or device PIN	Users who set one up on their device
Google or Apple	“Continue with Google” or “Continue with Apple”	Workspaces using Google or Apple accounts
Single sign-on (SSO)	Sign in through your company’s identity provider	Organisations that require it
Username and password	Password plus an emailed verification code	Frontline members and specific setups

If your workspace requires two-factor authentication (2FA), you’ll also be asked for a 6-digit code from your authenticator app or text message.

Signing in on desktop and in a browser

1. Open the Slack desktop app on Windows, Mac or Linux, or go to slack.com/signin in your browser.
2. Type the email address you use for work and choose Sign In with Email. Alternatively, choose Continue with Google or Continue with Apple.
3. Confirm it’s you. Enter the code from Slack’s email, approve with your passkey, or complete your company’s SSO screen.
4. Pick the workspace you want from the list and open it.

The desktop app keeps you signed in, so most people only do this once per computer. If you use Slack in a browser, signing out of your browser session or clearing cookies will sign you out of Slack too.

Signing in on iPhone and Android

1. Install the official Slack app from the App Store or Google Play. The publisher should be Slack Technologies.
2. Open the app and tap Sign In.
3. Enter your email address, or use Google or Apple.
4. Open the email from Slack and enter the code, or tap the confirmation link if one is offered on your device.
5. Choose your workspace.

Joining a workspace for the first time

If you’ve never used Slack before, your first “login” is really accepting an invitation. Here’s how it usually goes:

1. Find the invitation email. It comes from Slack and names the workspace and the person who invited you. Some companies share an invite link in another channel instead.
2. Click Join. Slack opens in your browser and asks you to confirm your email.
3. Set up your profile with your full name, a recognisable photo and your job title. Colleagues use these to find you.
4. Install the apps. Download the desktop app and the mobile app and sign in with the same email so notifications follow you.
5. Join the channels you need. Most workspaces have a general channel, team channels and announcement channels. Ask your manager which ones matter.

If the invitation link has expired, ask the inviter to send a new one. Invitations don’t last forever, and an old link will simply fail.

Guests and external partners

Freelancers and clients are often added as guests, who can only see specific channels, or are connected through Slack Connect, which links channels between two separate companies. Guests sign in exactly like everyone else, but they’ll only see what they’ve been given access to. If a channel you expect is missing, the workspace admin needs to add you to it.

Using Slack on a shared or work-managed device

On computers managed by your employer, Slack may be installed and configured by IT, with sign-in handled automatically through SSO. On shared or public computers, always use a private browser window and sign out when you finish, because a browser session can stay signed in for days.

Finding your workspace and its URL

Every Slack workspace has its own address, usually something like yourcompany.slack.com. You rarely need it now that sign-in is email-based, but it’s useful for admins, integrations and support requests.

If you can sign in

Slack’s help article explains where to look:

• Desktop: click your workspace name at the top of the sidebar. The URL appears under the name.
• Mobile: go to the Home tab and swipe right to open the menu. The URL appears under the workspace name.
• If the URL is cut off: check the workspace settings page.

If you don’t know which workspaces you belong to

Use Slack’s find your workspace page. Sign in with each email address you might have used, such as your current work email, an old work email or a personal address, and Slack will list the workspaces linked to it. If a colleague invited you, check which address the invitation email went to.

Adding and switching between workspaces

Many people belong to several workspaces: their employer, a client, a community group. Slack handles this neatly:

• Desktop or browser: click your workspace icon, choose Add a workspace, then Sign in to another workspace.
• Mobile: on the Home tab, swipe right, tap Add a Workspace, then Sign in to another workspace.
• From the sign-in screen: after confirming your email, select the arrow next to each workspace you want to open.

Once you’re signed in to several, the workspace icons appear in your sidebar and you can switch with a click.

Fixing common login problems

“I didn’t get the confirmation code”

• Wait a minute and check spam, junk and any “Promotions” or “Updates” tabs.
• Make sure you typed the right email address. A single typo sends the code nowhere.
• Search your inbox for “Slack confirmation code”.
• Request a new code rather than reusing an old one. Codes expire.
• Corporate email filters sometimes hold Slack messages. Ask IT to check quarantine.

“It says there’s no workspace for my email”

You’re probably using a different email from the one your workspace knows. Try other addresses on the find-your-workspace page, or ask the person who invited you which email they used. If you were removed or deactivated, only a workspace admin can restore access.

“I forgot my password”

You don’t need it for most sign-ins. Choose password-free sign-in, get a code by email, and you’re in. Slack notes that this code works for every workspace linked to your email, and you can set a new password afterwards in your account settings. See Slack’s password reset guide for the full steps.

“My company’s SSO keeps failing”

If your workspace uses SSO through providers such as Google Workspace, Okta or Microsoft Entra ID, Slack hands sign-in over to them. Errors here are usually fixed on the company side: an expired account, a missing app assignment or a misconfigured connection. Note the exact error message and send it to your IT team. Slack has a SAML troubleshooting guide for admins.

“I lost access to my 2FA codes”

Use one of the backup codes you saved when you set up two-factor authentication. If you don’t have them, contact your workspace owner or admin, who can help you regain access, or Slack support if you own the workspace yourself.

“I’m stuck in a sign-in loop”

Clear your browser cookies for slack.com, or in the desktop app use Help → Troubleshooting → Clear Cache and Restart. Then sign in again.

When Slack won’t load or connect

Sometimes the problem isn’t your login at all. Slack’s connection troubleshooting guide suggests working through these checks:

1. Check Slack’s status at slack-status.com. If there’s an outage, waiting is the only fix.
2. Reload: press Ctrl+R (Windows/Linux) or Cmd+R (Mac).
3. Clear the cache: in the desktop app, Help → Troubleshooting → Clear Cache and Restart. In a browser, clear the browser cache.
4. Try a private window. If Slack works there, a browser extension is probably interfering.
5. Run Slack’s connection test at slack.com/help/test. If it shows errors, your network may be blocking Slack.
6. Check VPNs, proxies, firewalls and antivirus. These are a common cause of “Slack cannot connect” messages, especially on work laptops.
7. Update the Slack app and your browser.

If messages only appear when you refresh, your network may be blocking the live connection Slack uses (WebSockets). That’s one for your IT team.

Keeping your Slack account secure

• Turn on two-factor authentication in your account settings, even if your workspace doesn’t require it.
• Use a passkey where available. It’s faster than email codes and resistant to phishing.
• Never share confirmation codes. Slack staff will never ask for them. A message asking for your code is a scam.
• Check the address bar. Real sign-in pages are on slack.com. Fake “Slack login” pages are a common phishing trick.
• Sign out of shared computers and review active sessions in your account settings if you think someone else has access.

The same habits protect your other accounts too. Fake login pages are one of the most common scams online, and our WeTransfer guide shows how phishing emails imitate familiar brands.

Tips for workspace admins

If you run a workspace, you can prevent most login tickets before they happen:

• Use one sign-in method consistently, ideally SSO for companies with an identity provider, so staff aren’t guessing which method to use.
• Restrict sign-up to your company domain to stop people joining with personal emails they’ll later forget.
• Require two-factor authentication for everyone, and remind people to save their backup codes.
• Write a one-page “how to sign in” note for new starters, including the workspace URL and who to contact.
• Deactivate leavers promptly, and review guest accounts regularly.

FAQ

What is the Slack login page?

It is slack.com/signin. You can also sign in directly from the Slack desktop or mobile app.

Can I log in to Slack without a password?

Yes. Most people sign in with an emailed confirmation code, a passkey, Google, Apple or company SSO instead of a password.

Why does Slack keep asking me to sign in?

Your workspace may set a session time limit, or your browser may be clearing cookies. Using the desktop app usually keeps you signed in longer.

How do I find my Slack workspace if I forgot the name?

Use the “find your workspace” page and sign in with each email address you might have used. Slack lists the workspaces linked to that email.

Can I use the same email for several workspaces?

Yes. One email can belong to many workspaces, and you can switch between them in the app.

Who do I contact if I’m locked out?

For a company workspace, contact your workspace admin or IT team first. They control accounts, SSO and two-factor settings. If you own the workspace, contact Slack support through the help centre.

Sources

• Slack Help: Sign in to Slack
• Slack Help: Locate your Slack URL or ID
• Slack Help: Troubleshoot connection issues
• Slack Help: Reset your password