Introduction
Single Sign-On (SSO) is a secure authentication method that allows you to log in to Gamma using your organization's identity provider (such as Okta, Google Workspace, Microsoft Entra ID, or OneLogin). When your organization sets up SSO, your IT administrators can require all employees with company email addresses to log in to Gamma using this method. This ensures consistent security policies and access controls across your organization.
For more information on single sign-on, please see:
Troubleshooting
I can't log in with SSO
Possible causes and solutions:
You're not assigned to Gamma in your identity provider.
Error message: "User not assigned to this app".
Solution: Contact your IT administrator to request access to Gamma in your company's identity provider.
Your organization hasn't configured SSO yet.
Solution: Check with your IT team to confirm SSO is set up. If SSO was recently made mandatory, ask them to verify the WorkOS configuration.
You're using the wrong login method.
Solution: Make sure you're clicking Continue with SSO, not signing in with a username and password.
Your session expired.
Solution: SSO sessions last for 1 day. Simply log in again through SSO.
Your email address configured in the IdP is not a verified domain.
Solution: Ask your IT administrator to verify the domain setup in the identity provider (IdP) configuration.
I see an error: "Invalid username or password"
Once SSO is required for your email domain, username and password authentication is disabled. You must use SSO instead:
Return to the login page.
Click Continue with SSO.
Enter your work email address.
Complete authentication through your organization's identity provider.
I was logged out unexpectedly
If your organization recently made SSO mandatory (day 30 of the rollout), all non-SSO sessions are terminated. Simply log back in using SSO.
I can't access my personal workspace anymore
If you used your work email for a personal workspace:
Log in using SSO with your work email.
Your personal workspace should still be accessible.
If you prefer to separate work and personal use, consider creating a new Gamma account with a personal email address.
The "Continue with SSO" button is greyed out or isn't working
The button only becomes clickable once Gamma recognizes a correctly formatted email address. Try these steps:
Delete the email address and retype it by hand. A space or hidden character from copying and pasting, or browser autofill that the page doesn't pick up, can keep the button greyed out, even in an incognito window.
Make sure you're entering your full work email address.
Clear your browser cache and cookies.
Try a different browser or use an incognito/private window.
Contact Gamma support if the issue persists.
Signing in from an in-app browser (Claude, Slack, Notion, etc.)
If your identity provider requires Okta FastPass or device trust, the embedded browser can't reach the Okta Verify desktop app. Choose a different factor (push notification or code), or complete the first sign-in in Chrome, Safari, Edge, or Firefox. Connectors stay authorized afterward.
I need help from my IT administrator
If you're experiencing login issues related to SSO, your IT administrator can help with:
Verifying you're assigned to Gamma in your identity provider.
Checking the SSO configuration in WorkOS.
Confirming domain verification is complete.
Reviewing any access restrictions or security policies.
Still having trouble? Contact Gamma Customer Support or reach out to your organization's IT administrator for assistance with SSO-related issues. If you're unsure how to contact Gamma Customer Support, please see How can I contact Gamma support?