How to Fix Password Reset Key Error in WordPress

When you request a password reset, WordPress generates a temporary key and tries to write it into the `user_activation_key` field of the `wp_users` table in your database. The error “Could Not Save Password Reset Key To Database” means that write failed. There are a few reasons this can happen:

Full disk quota. Your hosting account has an allocated storage limit, and your WordPress database counts toward it. When that quota is used up, WordPress cannot write anything new to the database — including the password reset key. Signs that your disk is full include error messages in your hosting control panel, failed image uploads, and posts that won’t save.

Database permission issue. If the database user linked to your WordPress site does not have WRITE permission on the users table, the key cannot be saved regardless of available disk space. This can happen after a hosting migration or a change in cPanel settings.

Caching conflict. A caching plugin or server-level object cache can sometimes return stale responses that make it appear the database write failed when the database itself is fine. Clearing all caches is worth trying before pursuing more involved fixes.

Corrupted database table. Rarely, the `wp_users` table itself can become corrupted, preventing any writes. This is less common but can happen after a server crash or a failed update.

If a full disk is the culprit, the goal is to reduce data stored on your server. Connect to your site using an FTP client and navigate to `wp-content/uploads/`. Look for large image files, old exports, or backup archives stored there. Download anything you want to keep, then delete it from the server.

Other effective ways to recover disk space:

• Deactivated plugins: Go to Plugins > Installed Plugins and delete any plugins you are not using. Even deactivated plugins take up server storage.
• Unused themes: Go to Appearance > Themes and delete all themes except your active theme and one backup. Each theme can take up several megabytes.
• Cache files: Open your caching plugin settings and purge all cached files. Caching setups that are never cleared can accumulate gigabytes over time.
• Server-side backup archives: If your backup plugin stores copies on the same server, move those to an off-site location — Dropbox, Google Drive, or Amazon S3 — then delete the local copies. Storing backups on the same server wastes space and creates a security risk if your site is ever compromised.

After freeing up space, try the password reset again. If it works, disk space was the problem. You may also need to consider upgrading to a hosting plan with a larger storage quota if you are consistently running close to your limit.

If freeing up disk space doesn’t help, or if the password reset emails simply aren’t arriving, you can bypass the reset flow entirely and change your password directly in the database. This approach works regardless of disk space or email delivery issues.

Log into your hosting control panel — cPanel, Plesk, or similar — and open phpMyAdmin. Select your WordPress database from the left sidebar, then click on the `wp_users` table. Find the row for your user account and click the Edit button.

Locate the `user_pass` field. In the Function dropdown next to this field, select `MD5`. Then type your new password into the Value field alongside it. Click Go to save the change.

Your password is now updated in the database. Return to the WordPress login page at `yoursite.com/wp-login.php` and log in with your new password. You do not need to reset it again through email.

If you want to check or correct database user permissions at the same time, go to cPanel > MySQL Databases > Current Users. Find the database user associated with your WordPress site and confirm it has SELECT, INSERT, UPDATE, and DELETE privileges on the database. If any are missing, add them and try the password reset flow again.