WordPress 5 Upgrade – API files returning 404 on Multisite

  • I’ve just upgraded to WordPress 5, and all is working fine on the main site.

    However on the two sub-branch sites, when I try to create a new post, I receive a white screen and the console reports 404 errors when trying to retrieve the following files:

    wp-includes/js/api-request.js?ver=5.0.3
    wp-includes/js/dist/api-fetch.js?ver=2.2.7
    wp-includes/js/wp-api.js?ver=5.0.3

    The files are definitely there, all other files are being retrieved correctly from the same and similar locations.

    There are no bugs reported in the debug file, I have reset permalinks and have tried deactivating all plugins.

    Does anyone kindly have any suggestions?

    Thanks
    James

Viewing 1 replies (of 1 total)
  • Thread Starter jamesthemonkeh

    (@jamesthemonkeh)

    The error was caused by a rewrite rule in our web.config file:

    <rule name=”API” stopProcessing=”true”>
    <match url=”API” />
    <conditions logicalGrouping=”MatchAll” trackAllCaptures=”false” />
    </rule>

Viewing 1 replies (of 1 total)
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