CSUDH Authentication Service Error

Clear Your Browser Cache

If you see the message below when attempting to access Canvas, please clear your browser cache to resolve the issue. Alternatively, you can also try a different browser.

How to Clear Browser Cache for Chrome, Edge, Firefox, & Safari

To learn more about clearing your cache in Google Chrome, visit Google Support.

1. In the Chrome browser toolbar, click the More menu icon.
2. Select the Clear browsing data link.
3. In the data drop-down menu, select the time range where you want to clear browsing data.
4. Select the Cookies and other site data and Cached images and files checkboxes.
5. Click the Clear data button.

Chrome – Clearing Canvas Cookies Only

Chrome also offers users a way to delete cookies for a single website such as Canvas:

1. In the Chrome browser toolbar, click the More menu icon.
2. Click the Settings link.
3. Click the Privacy and security Third-party cookies option.
4. Click the See all site data and permissions link.
5. At the top right, search for instructure.com or the name of your institution’s URL.
6. To the right of the site name, click the Delete icon.
7. To confirm, click the Delete button.

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To learn more about clearing your cache in Edge, visit Microsoft Support.

1. In the Edge menu bar, click the Settings icon.
2. Select Privacy, Search and Services link.
3. Click the Choose What to Clear button.
4. Choose the types of data or files you want to remove. Select the Cookies and other site data and Cached images and files checkboxes.
5. Click the Clear Now button.

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To learn more about clearing your cache in Firefox, visit Firefox Support.

1. In the Firefox menu bar, click the Firefox menu icon.
2. Select the Settings link.
3. Click the Privacy & Security tab.
4. In the Cookies and Site Data section, click the Clear Data… button.
5. Select both the Cookies and Site Data and the Cached Web Content checkboxes.
6. Click the Clear button.

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To learn more about clearing your cache in Safari, visit Apple Support.

1. In the Safari menu bar, click the Safari option.
2. Click the Clear History link.
3. In the Clear drop-down menu, select the time range where you want to clear browsing data.
4. Click the Clear History button.