Windows下openssl.cnf位置及Local WP相关OpenSSL配置问题

1. About the C:\Program Files\Common Files\SSL Folder #

• This folder is not created by Local WP by default. It’s typically generated when you install a standalone OpenSSL distribution on Windows (e.g., official binaries from Shining Light Productions, or via package managers like Chocolatey).
• Windows doesn’t include a system-wide OpenSSL installation out of the box, so this folder only exists if you’ve manually installed OpenSSL separately.

2. Does Local WP Require Manual OpenSSL Installation? #

• No. Local WP bundles its own complete PHP/OpenSSL environment. It doesn’t depend on system-wide OpenSSL installations, so you don’t need to install OpenSSL manually to use Local WP itself.

3. Troubleshooting the MainWP 500 Error #

The error openssl_pkey_get_details(): Argument #1 ($key) must be of type OpenSSLAsymmetricKey, bool given means MainWP failed to load a valid SSL key. This is likely linked to OpenSSL config issues, and here’s how to fix it:

• Set the correct openssl.cnf path in MainWP: Since Local WP uses its own bundled OpenSSL, point MainWP to Local’s internal config file instead of the system-wide one. For your site, the path will look like:

  C:\Users\Steve\Local Sites\mainwp\conf\php\{PHP_VERSION}\openssl.cnf
  

  Replace {PHP_VERSION} with the PHP version your MainWP site uses (e.g., 7.4.33—you can find this in Local WP under Site > Info).
• Verify the SSL key: Ensure the private/public key MainWP is trying to use is valid and not corrupted. If using a self-signed key from Local WP, it’s stored in your site’s SSL directory: C:\Users\Steve\Local Sites\mainwp\conf\ssl.
• Check Local WP’s PHP settings: Confirm the openssl extension is enabled for your site. Open Local WP > Site > Tools > Open Site Shell, then run:

  php -m | findstr openssl
  

  If openssl appears in the output, the extension is active.

Setting the correct openssl.cnf path in MainWP’s settings should resolve the 500 error if config misalignment was the root cause.

内容的提问来源于stack exchange，提问作者Steve