Use of cookies

To properly use Disqus, cookies — specifically, first-party cookies — must be enabled to leave comments and remember your Disqus login information.

Third party cookies

Disqus doesn't require third party cookies to be enabled for basic functionality, but is required in order to recognize you as logged in between pages. However, enabling third-party cookies depends on what that browser considers third-party. For example, Safari and new versions of Firefox consider our cookies to be "first-party", because they're used in a trusted way.

If you'd rather not enable third party cookies from all sites for any other browser, you can block them and simply add an exception for and its subdomains. Instructions to do so are noted underneath each browser below.

Single Sign-on

Disqus doesn't store an authentication cookie when signing in with Single Sign-on (website-specific profiles). The site is required to pass the user authentication each time the user loads the comments.

Cookies we set

These are the cookies we may set for someone visiting a site with Disqus embedded on it. This list is for sites complying with the EU cookie law.

External cookies

  • __qca (Domain:
  • mc (Domain:


  • __utma (Domain:
  • __utmb (Domain:
  • __utmc (Domain:
  • __utmz (Domain:

Google Analytics

  • UID (Domain:
  • UIDR (Domain:

Internal cookies

  • disqus_unique (Domain:
    Internal statistics, used for anonymous visitors (Sigma)
  • testCookie (Domain:
    Used to check whether the browser accepts 3rd-party cookies.

How to enable cookies

If you can't comment, or aren't able to stay logged in, check your cookie settings using these instructions for your browser. See below for instructions

Internet Explorer

  1. Click Tools in the upper right hand area of your browser
  2. Find and click Internet Options
  3. Go to the Privacy tab and click Advanced
  4. Check Override automatic cookie handling (if it isn't already)
  5. Make sure First-party Cookies are set to Accept
  6. Set Third-party cookies to Accept

If third party cookies are blocked:

  1. Under the Privacy tab click the Sites button
  2. Type and click Allow


  1. Click the Chrome Menu Icon -> Settings
  2. Near the bottom of the page, click Show advanced settings
  3. In the "Privacy" section, click Content settings
  4. In the "Cookies" section, choose Allow local data to be set (recommended)
  5. Make sure "Block all third-party cookies..." and "Clear cookies..." are unchecked

If third party cookies are blocked:

  1. Under Content settings click Manage Exceptions...
  2. Type [*.] as a hostname pattern and set to Allow


  1. Windows: Go to Tools -> Options
    Mac: Go to Firefox -> Preferences
  2. Click the Privacy tab
  3. Under History, select Use custom settings for history
  4. Check both Accept cookies from sites and Accept third-party cookies

If third party cookies are blocked:

  1. Under the Privacy tab click Exceptions
  2. Type and then click Allow


  1. Windows: Go to Edit -> Preferences
    Mac: Go to Safari -> Preferences
  2. Click the Security tab
  3. Under Block Cookies, select From third parties or advertisers or Never
Contact us Community Q&A

We welcome all questions, feedback and bug reports. If you're having an issue, we usually need the following information:

  • A brief description of the issue
  • Link to any page where you saw the issue
  • Screenshots that illustrate the problem - How do I take a screenshot?