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Clearing Browser Cache, Cookies, and Site Data

While using LMSCLUS or other university web services, you may experience login or authentication errors, unexpected sign-outs, pages that do not load correctly, outdated information, unresponsive links or buttons, file upload or download problems, or other unexpected browser behavior. Some of these problems may result from outdated cached files, cookies, or site data. Before requesting technical support, try the steps below, as they may resolve the problem. However, these steps cannot resolve every issue; for example, they cannot correct an actual missing course enrolment.

Understanding cache and cookies

The browser cache stores temporary website files. Cookies and site data may contain authentication and login session information. For Microsoft Entra ID authentication problems, clearing the cache alone may not be sufficient. You should clear both cached files and cookies/site data.

1. First try a private/incognito window

  1. Google Chrome: Press Ctrl + Shift + N (Mac: Command + Shift + N).
  2. Microsoft Edge: Press Ctrl + Shift + N (Mac: Command + Shift + N).
  3. Mozilla Firefox: Press Ctrl + Shift + P (Mac: Command + Shift + P).
  4. Safari (Mac): Press Command + Shift + N.

2. Google Chrome

  1. Open the three-dot menu (⋮) and select 'Delete browsing data'. Shortcut: Ctrl + Shift + Delete.
  2. Set the time range to 'All time'.
  3. Select 'Cookies and other site data' and 'Cached images and files'.
  4. Leave passwords and autofill information unchecked, then click 'Delete data'.

3. Microsoft Edge

  1. Open the three-dot menu (⋯) and select Settings, or press Ctrl + Shift + Delete.
  2. Navigate to 'Privacy, search, and services' and locate the browsing data clearing options.
  3. Set the time range to 'All time'.
  4. Select 'Cookies and other site data' and 'Cached images and files'.
  5. Leave saved passwords unchecked and click 'Clear now'.

4. Mozilla Firefox

  1. Open the menu (☰) and select Settings → Privacy & Security.
  2. Find 'Cookies and Site Data' or 'Browsing data' and select 'Clear data'.
  3. Choose 'Everything' as the time range.
  4. Select cookies/site data and temporary cached files, then clear them.

5. Safari (macOS)

  1. Open Safari → Settings → Privacy.
  2. Select 'Manage Website Data'.
  3. Remove website data associated with LMSCLUS and Microsoft sign-in pages.
  4. If necessary, select 'Remove All'. This may sign you out of other websites.
  5. If cache-related issues persist, use Safari's cache clearing options.

6. Using another browser

For example, if you normally use Google Chrome, you may try LMSCLUS in Firefox or Edge, provided that you have not previously signed in to your university Microsoft account in that browser. This allows you to test whether the problem is specific to your original browser without deleting its stored data. However, if you previously signed in using the same university account in the alternative browser, old session information may still be present. Use a private window or clean browser profile. Opening another tab in the same browser is not an independent test. If authentication succeeds in a clean alternative browser, clearing cookies and cached data in your original browser may help. Failure in another browser does not conclusively prove that the problem originates from your university Microsoft account.

7. Restarting your browser or computer

Some temporary problems can be resolved by completely closing and reopening your browser or restarting your computer.

  1. Save any work you have in progress.
  2. Close all browser windows.
  3. Reopen the browser and try accessing LMSCLUS again.
  4. If the problem persists, restart your computer and try again.

Restarting your computer may resolve temporary software, memory, or network connection problems. However, it does not automatically delete browser cookies, site data, or persistent cached files. If outdated cookies or stored authentication sessions are causing the issue, you may still need to follow the clearing instructions above.

8. If the problem persists

For authentication or Microsoft account errors, please visit the Information Management Department. If you can log in to LMSCLUS but cannot see your courses, first contact your academic unit's LMS Coordinator Assistant and then your LMS Coordinator. When requesting support, provide the error code, a screenshot, and the troubleshooting steps you have already tried.

Information Management Department

Academic Unit LMS Coordinators and Assistants

Clearing cookies may sign you out of other websites. You do not need to delete saved passwords or autofill information. After clearing the data, completely close and reopen your browser and try logging in again.