Help & Support

As of 5/20/26 Knowledge Commons has a new login and registration system. Click to learn more and access help documentation

Login Issues

If you’re having difficulty accessing your Knowledge Commons account, there are a few steps you can take to resolve the issue. This guide covers basic troubleshooting, how to identify your login method, and how to clear cookies for the Commons in major browsers. See Login and Registration for updated information on our new login and registration process.

In this article

Check the following common issues:

  • Are you using the correct username and password?
  • Check to make sure that CILogon is not having an outage.
  • Are you using the same login method you originally registered with?

Your login method might be:

  • Google
  • ORCID
  • Microsoft
  • GitHub
  • Your institution's or organization's single-sign-on

Using the correct method is essential to signing in successfully.

Try Clearing Your Knowledge Commons Cookies

Some users—especially those who haven’t logged in for a while—may have corrupted login cookies that prevent them from accessing their account.

Clearing cookies only for hcommons.org and cilogon.org often resolves this issue.

Below are step-by-step instructions for Chrome and Firefox.

Clearing Cookies in Google Chrome

  1. Click the three vertical dots in the upper-right corner of Chrome.
  2. Select Settings.
  3. In the left-hand menu, choose Privacy and security.
  4. Click Cookies and other site data.
  5. Scroll down and select See all cookies and site data.
  6. Use the search bar at the top to search for hcommons.org.
  7. Click the trash can icon next to the entry to delete the cookies.
  8. Follow steps 6 and 7 for cilogon.org.
  9. Close the Settings tab and consider restarting your browser.

Clearing Cookies in Mozilla Firefox

  1. Click the three horizontal lines in the upper-right corner of Firefox.
  2. Select Settings.
  3. From the left menu, choose Privacy & Security.
  4. Scroll to the Cookies and Site Data section.
  5. Click Manage Data…
  6. Search for and select hcommons.org.
  7. Click Remove Selected.
  8. Follow steps 6 and 7 for cilogon.org.
  9. Click Save Changes.
  10. A pop-up will warn that you may be logged out of sites—choose Remove to confirm.
  11. Close the Settings tab and consider restarting your browser.

Still Having Trouble?

If CILogon is running and you're having an issue with your institution's or organization's single-sign-on, please contact your local IT or help desk. We’re here to help. Email us at hello@hcommons.org with as much detail as possible, including:

  • Your username
  • The login method you believe you used
  • Any error messages you see
  • Whether you have already tried clearing cookies

We’ll work with you to get you back into your account.

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