Operating & Internet System Requirements | WW USA

System Requirements

Below is a step-by-step guide to making sure your computer and browser are compatible with our site.

Please note that if your computer and browser aren’t compatible, you may have trouble accessing some features on our site.

Operating Systems

We support Windows XP and higher and Macintosh OS X 10.6 and higher on WeightWatchers.com.

While it is possible to visit our website with other operating systems, they may not load all of a webpage’s features, and we’re unable provide support for them.

WeightWatchers® recommends that you use the most recent version of one of our supported web browsers to have the best experience on our site. While we do believe that the most recent versions will give the best experience we currently support Internet Explorer 8 and higher, Firefox 10 and higher, Safari 5 and higher, and Chrome 8 and higher.




Internet Explorer

Cookie Configuration

Please make sure your browser has been configured to accept cookies, as otherwise you will not be able to log into WeightWatchers.com. Cookies are small text files placed on your computer that work with your web browser to facilitate your logins and to provide us with other important information, as described in our Privacy Policy. For more details about cookies and the kind of information we collect from cookies, please read our Privacy Policy. Here is how you check to see if cookies are enabled in your browser:

For Internet Explorer

For Firefox

For Macintosh Safari

For Internet Explorer

  1. From the Tools menu, click Internet Options. If your menu bar is hidden (IE9) please tap your ALTkey first.
  2. Click the Security tab, then the Custom level button.
  3. Under Reset Custom Settings, choose Medium-high (default) from the drop-down menu.
  4. Click the Reset button.
  5. In the Privacy tab, click the Advanced button.
  6. In the new window, check Override automatic cookie handling
  7. Accept both First-Party Cookies and Third-Party Cookies and be sure Always allow session cookies is checked
  8. Click OK, then OK again to exit Internet Options.

For Firefox

  1. From the Tools menu select Options (Mac users select Preferences). If the menu is hidden please tap your ALT key first
  2. Click the Privacy icon, then check Accept cookies from sites.
  3. Also check Accept third-party cookies.
  4. Click the Exceptions button.
  5. In the new window, enter *.weightwatchers.com in Address of Web Site input field.
  6. Click Allow, then click Close.
  7. Click OK.

For Macintosh Safari

  1. From the Safari menu, click Preferences | Security icon.
  2. Check the check boxes to enable JavaScript.
  3. On the same screen, check the checkbox to Accept Cookies Always.

Flash Player

Much of our website uses Flash, including workout videos, cheat sheets and site tools. We recommend that you install it.

Visit Adobe’s Downloads page and click the “Get Adobe Flash Player” button. The upgrade will occur for IE users automatically.

Firefox and Safari users: Please be sure to download Flash and install as you would any other software.

Active X  

If you are using a PC and either have issues installing Flash Player or it isn’t working, it’s possible that your Windows security levels are too high and block these functions. Please check the following:

From the Tools menu in your Internet Explorer, click Internet Options. If your menu bar is hidden (IE9) please tap your ALT key first.

1. Click the Security tab, then the Custom level button.

2. Under the Active X Controls and Plug Ins category, please set Run Active X Controls and Plug Ins to Enable.

3. Click OK, then OK again to exit Internet Options.


Our site also uses JavaScript. Most browsers have JavaScript enabled by default but they also allow the user to disable or enable it. We require JavaScript to be enabled for our site to function properly. 

Here is where you can check to see if JavaScript is enabled in your browser:

For Internet Explorer

For Firefox

For Macintosh Safari

For Internet Explorer

  1. From the Tools menu, click Internet Options. If your menu bar is hidden (IE9) please tap your AL Tkey first.
  2. Click the Security tab, then the Custom level button.

For Firefox

  1. From the Tools menu select Options (Mac users select Preferences). If the menu is hidden please tap your ALT key first.
  2. Click Content.
  3. Be sure that Enable JavaScript and Enable Java are both checked.
  4. Click OK.

For Macintosh Safari

  1. From the Safari menu, click Preferences | Security icon.
  2. Make sure these check boxes are selected: Enable Plug-ins, Enable Java, and Enable JavaScript.
  3. Make sure this check box is not selected: Block pop-up windows.


If you've had problems getting pop-up windows on our website to load, you may have a browser setting, toolbar or Firewall that could be suppressing our pop-up windows. We understand the desire to block pop-up advertisements; however WeightWatchers.com uses pop-up windows in important places, such as launching Plan Manager or uploading images in our Community.

If you have a pop-up blocker or firewall on your computer, you may want to consider disabling it while using our website, or learn which settings you can change to allow our pop-up windows to appear successfully.

If you continue to have difficulty after you've followed any of these steps, please contact customer service at techsupport@weightwatchers.com.