Skip to main content

This content has been archived and is no longer being updated. Links may not function; however, this content may be relevant to outdated versions of the product.

Support Article

Icons or images do not display in IE11



Icons or images do not display on the Internet Explorer 11 browser.

Error Messages

Not Applicable

Steps to Reproduce

Log in to the portal using Internet Explorer 11 browser through a proxy.

Root Cause

Content security policies were in place for the proxy which modified the HTTP response header. One of the settings had both Pragma: no-cache and Cache-Control: max-age. These two cache settings conflicted with each other. The Internet Explorer 11 browser could not handle this contradiction gracefully.


Perform the following local-change:

Address the conflicting cache control directives.

Published May 9, 2019 - Updated October 8, 2020

Was this useful?

0% found this useful

Have a question? Get answers now.

Visit the Collaboration Center to ask questions, engage in discussions, share ideas, and help others.

Did you find this content helpful?

Want to help us improve this content?

We'd prefer it if you saw us at our best.

Pega Community has detected you are using a browser which may prevent you from experiencing the site as intended. To improve your experience, please update your browser.

Close Deprecation Notice
Contact us