- Plesk for Windows
Cannot install Let's Encrypt extension:
PLESK_ERROR: Execution of C:\Program Files (x86)\Parallels\Plesk\tmp\modDFD8.tmp\plib\scripts\pre-install.php failed with exit code 1 and the output: SNI is supported on Windows 2012 and later
- Plesk is installed on Windows Server version lower than 2012.
Let's Encrypt extension requires Windows Server 2012 or higher.
Migrate Plesk to a server with supported OS version (Windows Server 2012 or newer).