All 31 Login Security answers
Answer
The Two-step sign-in tab opens a page that cannot be found
WordPress learns the tab's address on the next page you open in wp-admin after the tab is switched on, and again the same way after WooCommerce has been switched off and on, or after the permalinks were rebuilt on a page without WooCommerce. A visitor's page never does it, so open any page in wp-admin and try the tab again. If it still opens a page that cannot be found, open Settings → Permalinks and press Save Changes without changing anything. WordPress then learns every address on the site again, the tab's included.
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