Symptoms

After upgrading JavaScript, the users can see JavaScript errors on Internet Explorer 8. It appears on the dashboard page even before logging on. See an example of JavaScript errors regarding IE 8: 

Diagnosis

In order to confirm if you're experiencing the error mentioned above, please, check the following points:

• Check if the proxy configuration is the same for the users that are experiencing these errors.
• Set all Internet Explorer security levels to the same level for everyone.
• Also, check if there is no Trusted Sites on Internet Explorer 8, they have different security levels from the other sites.
• Default the user customization(s).

Cause

The pages experiencing JavaScript error is due security level constraints set on Internet Explorer 8 being different from default.

Resolution

1. Change all pages experiencing JS errors to the default security level ("Medium").
2. If Trusted Sites is the case, remove the page list of trusted sites, so it will show up as part of the "Internet" zone (with "Medium-high" security level).