Support » Fixing WordPress » cURL error in updating database

  • I’m upgrading my multisite installation to 4.8, and everything went fine except the DB upgrade. When I navigated to /wp-admin/network/upgrade.php, and started the process, on the very first (and every other) site, I get the following error:

    Warning! Problem updating https://domain.tld/SITENAME. Your server may not be able to connect to sites running on it. Error message: cURL error 35: NSS: client certificate not found (nickname not specified)

    My SSL certs haven’t changed since the upgrade, and neither have any Apache settings. I can access every site, and their respective admin portions. I haven’t found any other issues in my installation, but I’m worried that not upgrading every site will come back to bite me.

    Any ideas?

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