Static resources not loading when the critical update for "Serve Static Resources from the Visualforce Domain" is enabled
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Known Issues · Fixed

Static resources not loading when the critical update for "Serve Static Resources from the Visualforce Domain" is enabled

AppExchange , VisualForce

Last updated 2017-05-25 ·Reference W-3165458 ·Reported By 81 users

Fixed - Winter '17

Summary
Once the "Serve Static Resources from the Visualforce Domain" critical update is applied, certain static resources return with a HTTP 404 error the very first time they are loaded with an empty cache due to a redirection taking place to an incorrect static resource URL. If the page is refreshed, they load fine.

- Actual result: HTTP 404 error is returned for certain static resources.

- Expected result: Static resources should load successfully.

Repro
1) Create two static resources

a) JQuery - this is just out-of-the-box jQuery uploaded as a static resource
b) SimpleJS - one line of Javascript below:

jQuery('#message').text('It worked! :)');

2) Create a Visualforce component as below

<apex:component access="global">
<div id="message">It did not work.</div>
<script src="{!URLFOR($Resource.JQuery)}"/>
<script src="{!URLFOR($Resource.SimpleJS)}"/>
</apex:component>

3) Create a Visualforce page as below:

<apex:page >
<loadingbug:BugTestComponent />
</apex:page>

4) Turn on the critical update "Serve Static Resources from the Visualforce Domain". This is auto-enabled and enforced in Summer '16 (it was admin controllable in Spring '16).

5) Try to access the Visualforce page directly right after logging into the org by going to https://<instance>.salesforce.com/apex/TargetApexPage.

Results:

a) Either static resource SimpleJS.js or jQuery.js will not be loaded and will return HTTP 404
b) The Visualforce page will show "It did not work.".

Workaround
a) Reload the Visualforce page.
b) In Spring '16 orgs, disable the critical update "Serve Static Resources from the Visualforce Domain".

NOTE: In Summer '16 orgs, the critical update "Serve Static Resources from the Visualforce Domain" is auto-enabled and enforced. This feature cannot be disabled.

Reported By (81)

Rick Nendza nCino Admin John Karlo Torres Rampalli Sarma Patrick Nylen Timothy Stockert Chase Logan Praveen Bonalu Daniel Ballinger Andis Vildavs Lee Evans Moussa Horanieh Félix Guinet Francois Poirier Brittany Bond Klaus Guenther Lim Siow Xuan Lim Chun Wei Lee Ronald Poulson Jason Lim Vinod Reddy Rondla Dipak Sonawane Dinakar Makam Vipul Bhatnagar Nigel Hughes John Allcorn Evy Suwono PFI Production Tier1 Financial Services Guillaume Plez Jeff Coquery Scott Santarromana JD Bell Mark Tucker Barry Schell Don Souza Jacob Cohen jojo zhao Mario Lukica Frank Lurz Dominic LauQuan Vivek Manoharan Sreenivas Voore Ariel Norvell Theodoor van Donge Eric Budd Adam Learned Amy Reams Joseph Quick Kyle Hagan System Admin JD Jack Sanford Drew Ritzman Santiago Perez John Hillstrom 明弘 児子 Ivan Gakic System Administrator Kresimir Tonkovic Ivan Vrtarić Kevin Jackson Krishna Sekhar Sarangam William McCullough Craig Rosenbaum Daniele Cinelli Eric Wu David Eckblad James Loghry Blakely Graham Mike Tetlow Matthew Sones Ben Hubbard Ian Sidle Jordan Pesusich Hampel Corp Ryan Hitchler Steve Roch Melani Sebastian Adam Learned Kendric Evans Bailey Carlson

Is it Fixed?

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