Interactive Textbook


Q. Embedded Youtube videos are not working on my browser.

A. This is a known issue when you are logged into multiple Google accounts and the data accumulated clashes.

Permanent Fix: Clear your browser’s whole cache, cookie and browsing history to flush out the data that Google has on your browser. Then retry.

Temporary Fix: Use Incognito mode on your Chrome browser.

Q. Whenever I use the back button or come back from a different link, buttons on the website stop working.

A. This is due to bfcache. After your browser travels back or forward in the history, or if your browser deems that it has enough information in the cache, it won’t execute the scripts necessary to run the website. In this case, you should force your browser to reload this script by refreshing the page.

Q. Some of the services (like CodePost or the main website) are not working properly on the web browser I use.

A. All of our infrastructure (including CodePost) can only be accessed with Google Chrome. Behaviors on other browsers (especially Safari) are not defined, and we will not be responsible for any failures caused by not using Chrome.



What is ALLAboard?

CS 128 ALLAboard provides an innovative way for you to get started on our course without waiting for us to generate an account for you, and link all third-party service credentials.

I don’t have an Illinois Google Apps account. How can I obtain one? 

You have to enable this. Follow the directions here.

I keep getting stuck or get an error when linking my Zoom account / What’s Zoom HD Mismatch? 

For security and compliance reasons, we only accept logins done through SSO (Single Sign On) with your Illinois Zoom account. Read this article to find out how to do this.

I’m getting stuck repeatedly, what should I do?

Try refreshing the page or logging out and logging back in. Also, try clearing your browser cache/cookie, or use a different browser. If this doesn’t help, contact us (instructions below).

I’m retaking CS 128 and onboarding is not working. What should I do?

We need to manually verify your account and reactivate your existing one. Please contact us at the email address below.

Why is my enrollment not verified?

This is totally normal. It can take up to a week for the registrar to update the online roster and sync it to our system.

How can I make sure I have access to everything I need?

Check if you can log in and access…

There’s a problem I can’t resolve.

If none of the solutions here work for you, feel free to email us at [email protected] using your @illinois email. Include as much details as possible. Do not include any personal information; this inbox is not FERPA-compliant.