Last Updated: 01/08/2019

General FAQ

When is D2L being retired?

D2L will no longer be available after Spring 2019. Learn more about Canvas, CU Boulder's new learning management system.

How does the Email tool work?

For information on this topic visit the Understanding Email page.

How to effectively use the discussion board?

The Discussions tool is a collaboration area where you can post, read and reply to messages on different topics, share thoughts about course materials, ask questions, share files, or where students can work with peers on assignments and homework. For more information please visit OIT's Discussion help page.

What are the recommended browsers for D2L?

Desire2Learn works with most major web browsers. For more detailed information visit D2L - Supported browsers.

What is Kaltura?

Kaltura is a hosting service that we have contracted with to provide rich media streaming services. It allows for uploading, editing and managing rich media content for campus colleges, schools, departments and groups. It allows for integration with the campus online learning environment (Desire2Learn) and with campus websites. It allows for media such as video, audio, photographs to be stored and presented in a variety of way to benefit faculty, students, campus affiliates and external viewers.

What is the maximum file size upload via Kaltura?

A maximum approaching 2 GB worth of data may be uploaded into Kaltura at a given time. If you get any error upon uploading, please check the file size.  If the file is too large there are free programs such as iMovie (for Mac) and Live Movie Maker (for Windows) that will edit files down in size.  If further assistance is needed, a media preparation service is offered (for a fee) at the Norlin Library e-reserves.

What is the maximum file size upload?

There are no file size limits for files uploaded to D2L; however, the ability to upload large files is influenced by your Internet connection and web browser. If a file is too large, the browser may time out or stop the upload.

D2L Email:

  • Maximum Attachment Size Limit: 10 MB
  • Maximum Message Size Limit: 10 MB


  • Maximum File Size Limit: 5 MB
  • Maximum Total Storage Space: 20 MB
  • Group Locker Maximum Total Storage Space: 20 MB


  • Recommended File Size Limit: Less than 20 MB
  • Maximum Total Storage Space: Unlimited


  • Recommended File Size Limit: Less than 20 MB
  • Maximum Total Storage Space: Unlimited
What’s the maximum length of audio files recorded within D2L?

5 minutes. 

Where are student tutorials located?

Students can view tutorials within the student help section.

Who should I contact if I have technical problems?

If you have a technical problem, contact the IT Service Center at: help@colorado.edu or call (303) 735-HELP.

Why can't I insert the photo I uploaded via Kaltura?

While photos may be uploaded into Kaltura from within D2L, users will need to contact the IT Service Center to manually insert those photos into their D2L course.  Work on this functionality is still in progress with Desire2Learn.

Does Zoom integrate with Desire2Learn?

Zoom does not include a “credential passing” Learning Tools Interoperability (LTI) integration with Desire2Learn. However, D2L’s “content” link posting can be used to share a link to a Zoom meeting. For more information on adding a Zoom link in D2L, please visit the D2L - Add a Zoom Web Conference Link tutorial.

Should I send grades via email and is it secure?

No. Grades and other sensitive information should be password protected and sent via a more secure route than an email message. OIT recommends using the Large File Transfer service to more securely send grade files.

For instructions on password protecting files using Excel, please reference the following tutorials:

Windows Instructions

Macintosh Instructions

Student FAQ

How long after I am registered for a course am I granted access to the D2L course?

It may take up to two business days to be granted access to the D2L course.