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Cannot install Let's Encrypt extension on Plesk for Windows: SNI is supported on Windows 2012 and later

Alexander Tsmokalyuk

Updated December 25, 2019 06:45

Applicable to:

Plesk for Windows

Symptoms

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.

Cause

Let's Encrypt extension requires Windows Server 2012 or higher.

Resolution

Migrate Plesk to a server with supported OS version (Windows Server 2012 or newer).

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