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Change permalink settings with WordPress host and Nginx
Changing the permalink settings in WordPress when using Nginx will result in a 404 error when viewing your site. Add the following line to your “try files:” text box in Settings > Hosts > Nginx to fix this issue.
$uri $uri/ /index.php?$args;
Restart your servers, close and reopen your browser. You will now see your individual posts instead of a 404 error when navigating through your WordPress site.
More information about using WordPress with Nginx can be found here.