- Plesk for Windows
Trying to install Let's Encrypt extension results the following error:
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
- The OS version is lower than Windows 2012.
Let's Encrypt requires Windows 2012 as a minimum requirement.
Migrate Plesk to a server with the right OS version (Windows 2012 or later).