Plesk Windows备份恢复报错：ISAPI与smwebmail相关问题求助

Hey there, let's break down how to fix both those warnings you're seeing when restoring backups in Plesk for Windows:

First, a quick heads-up: PHP 5 is end-of-life and has critical security gaps—while we can get the ISAPI handler working, you should strongly consider upgrading your sites to a supported PHP version long-term. That said, here's how to enable it:

• Log into your Plesk control panel, head to Tools & Settings > PHP Settings.
• Check if a PHP 5.x version with the ISAPI handler is already listed:
  • If it's there but inactive, toggle its status to enabled.
  • If it's missing, click Add PHP Version:
    • Pick the specific PHP 5.x release you need (e.g., 5.6) from the dropdown.
    • Under Handler type, select ISAPI.
    • Follow the prompts to finish installation—once done, the isapi-5 handler will show up in your PHP settings list.
• Next, confirm IIS allows the ISAPI extension:
  • Open IIS Manager on your Windows server.
  • Navigate to the server-level node, then go to ISAPI and CGI Restrictions.
  • Find the entry for your PHP 5 ISAPI module, and set its status to Allowed.
  • Also, check Handler Mappings in IIS to make sure the PHP 5 ISAPI mapping exists and is enabled.

smwebmail is a legacy webmail client that's often replaced by Horde in newer Plesk versions, but you can still install it if needed:

• In Plesk, go to Tools & Settings > Updates and Upgrades.
• Click the Add/Remove Components button.
• Expand the Mail Hosting category, then look for the smwebmail component (it might be labeled "SM Webmail" depending on your Plesk version).
• Check the box next to it, then click Continue to start the installation process.
• Once installed, you can set smwebmail as the default webmail client by going to Tools & Settings > Mail Settings and updating the default webmail option.

Hope these steps resolve those backup warnings for you! If you hit any snags during setup, feel free to share more details.

内容的提问来源于stack exchange，提问作者Sina Maafi