I can't find my course / "Course not found" error

Most common cause: You haven't enrolled in the course yet.

Solution:

1. Check LEARN for enrollment instructions specific to your course
2. Go to the course enrollment page
3. You will need to sign in if you haven't already
4. Find the link on the enrollment page for your course
5. Click the course-specific link and then click the "Enroll Now" button on the course page

Note: You must be signed in BEFORE clicking the enrollment link.

The course says it's not available yet / "Coming Soon"

Cause: The instructor hasn't opened the course for enrollment yet.

Solution:

• Check the course start date in LEARN
• Most courses open at 5:00 PM EST on the first day of term
• Wait until the scheduled time and try again

I'm enrolled but only see my old course from last term

Cause: Old courses stay active until the course team archives them.

Solution:

• You can safely ignore old courses
• Make sure you've enrolled in the current term course (see enrollment instructions above)
• Both courses can appear on your dashboard at the same time

I can't log in / page won't load / getting strange errors / 502 Bad Gateway error

Most common cause: Your browser cookies need to be cleared.

Solution - try these in order:

1. Clear ALL your browser cookies (IMPORTANT):
   • Follow these instructions
   • ⚠️ CRITICAL: When prompted for time range, select "All time" or "Everything"
   • Do NOT use "Last hour" or "Last day" - this won't fix the problem
   • This is especially important for 502 errors - your uwaterloo.ca cookies get too large and cause the server to reject your request
   • Restart your browser completely after clearing cookies
   • Then try logging in again

   We know clearing all cookies is annoying (you'll be logged out of everything). If you're comfortable doing it, you can try deleting ONLY cookies for *.uwaterloo.ca domains instead - search online for "how to delete cookies for specific site [your browser name]" for instructions. But if that seems complicated, just clear everything - it's faster and guaranteed to work.

2. Try Incognito/Private mode (this bypasses cookies temporarily)
3. Disable browser extensions:
   • Ad blockers and security extensions can interfere
   • Temporarily disable them and retry
4. Try a different browser:
   • Chrome, Firefox, and Edge all work well
   • Safari can sometimes have issues

Clearing ALL cookies (not just recent ones) fixes 502 errors and most login issues.

Forum access error / "You don't have permission"

Cause: Your account wasn't automatically created in the forum database.

Solution:

1. Contact support to manually create your forum account
2. Log back in after receiving confirmation

I can't access Marmoset / not enrolled in Marmoset course

Cause: TAs manually add students to Marmoset.

Solution:

• Email your course TA and ask them to add you
• Include your UW userid in the email
• This is not an Open edX issue

What to include in your support email

To get the fastest response, always include:

1. Use your @uwaterloo.ca email address (required to verify your account)
2. Course name/number (e.g., "CS 136 Winter 2026")
3. What you were trying to do
4. What browser you're using (Chrome, Firefox, Safari, etc.)
5. Exact error message (screenshot is helpful)
6. What you've already tried (cleared cache, different browser, etc.)