• I run a multisite and for some reason, W3 Total Cache was a some weird error when accessing the homepage of a site: invalid key.

    It would start to load the page and I would see the the title appear in the browser’s title bar, but then it would redirect to URL query resulting in the error message.

    However, I can access everything else including the homepage, so long as I added some kind of query to the url (e.g. example.com/?foo). And this affected all sites on the network.

    It might be some kind of cookie issue, since there’s no issue when loggin in and accessing my homepages while in FireFox’s Private Browsing mode.

    https://wordpress.org/plugins/w3-total-cache/

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