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Troubleshooting 404 or 504 Errors on Kaleidoscope

If you're encountering a 404 or 504 error while using Kaleidoscope, try the following steps first:

Additionally, you may encounter other errors such as server-side issues (e.g., 500 errors) or problems related to high traffic on the platform.

Quick Fixes

If the issue is due to high traffic, waiting for a few minutes and trying again later may resolve the problem.

  1. Clear your browser's cookies and cache.

  2. Restart your browser.

  3. Try accessing the page in a different browser (e.g., Chrome, Firefox, Safari).

Step 1: Clear Your Cookies and Cache

Switching roles frequently (like logging in as a client, then as a reviewer or applicant) can cause your browser to store conflicting cookies. Clearing them usually resolves the issue.

Quick Way to Clear Cookies for Kaleidoscope:

  1. Click the lock icon 🔒 next to the Kaleidoscope URL in your browser.

  2. Select Cookies.

  3. Remove or clear all cookies listed for the site.

  4. Refresh the page.

To Clear Full Cookies + Cache (Optional but Recommended):

Google Chrome

  • Click the 3 dots (top right) → Settings → Privacy & Security → Clear Browsing Data

  • Choose Cookies and other site data and Cached images and files

  • Click Clear data

Mozilla Firefox

  • Click the 3 lines (top right) → Settings → Privacy & Security

  • Under Cookies and Site Data, click Clear Data

  • Select both Cookies and Cached Web Content, then click Clear

Microsoft Edge

  • Click the 3 dots (top right) → Settings → Privacy, search, and services

  • Under Clear browsing data, click Choose what to clear

  • Select Cookies and other site data and Cached images and files

  • Click Clear now

Safari (Mac)

  • Go to Safari > Settings (or Preferences) → Privacy

  • Click Manage Website Data → Find and remove Kaleidoscope cookies, or click Remove All

  • Then go to the Advanced tab, enable Show Develop menu in menu bar

  • In the menu bar, go to Develop > Empty Caches

Step 2: Restart or Try a New Browser

After clearing cookies and cache:

  • Restart your browser

  • Or try using a different browser (e.g., switch from Chrome to Firefox)

Step 3: Still Seeing the Error? Send Us These Details in Your Support Ticket

Preventive Tips

  • Keep your browser updated to the latest version for optimal performance.

  • Regularly clear your browser's cache and cookies to prevent unexpected errors.

If the issue still persists, our team needs a few details to effectively troubleshoot the problem:

  • The URL where you encountered the error

  • The time it occurred

  • A screenshot of your full screen, including the browser bar

  • If possible, a screenshot of the Developer Console (see below)

  • Ensure you are logged into your Kaleidoscope account before accessing application links.

How to Open the Developer Console

Google Chrome

  • Windows/Linux: Press Ctrl + Shift + I or F12

  • Mac: Press Cmd + Option + I

  • Or right-click anywhere on the page → click Inspect → go to the Console tab

Mozilla Firefox

  • Windows/Linux: Press Ctrl + Shift + I or F12

  • Mac: Press Cmd + Option + I

  • Or right-click → Inspect → go to the Console tab

Microsoft Edge

  • Windows/Linux: Press Ctrl + Shift + I or F12

  • Mac: Press Cmd + Option + I

  • Or right-click → Inspect → navigate to the Console tab

Safari (Mac only)

  1. Go to Safari > Preferences > Advanced

  2. Check the box for “Show Develop menu in menu bar”

  3. Then press Cmd + Option + I or use Develop > Show JavaScript Console

By providing this information, you help us diagnose and resolve the issue faster. Thank you!

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