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Plesk extension 'X' not installed on target Plesk, data of this extension will not be migrated

Alexander Davydov

Updated January 13, 2026 18:59

Plesk for Windows Plesk for Linux kb: technical ext: migrator

Applicable to:

Plesk for Linux
Plesk for Windows

Symptoms

Migration and Transfer manager shows the following warning:

PLESK_WARN: Plesk extension 'X' not installed on target Plesk, data of this extension will not be migrated

Cause

The mentioned extension is not installed on the target server before the migration was started.

Resolution

Log in to Plesk on the target server.
Go to Extensions > Extension Catalog.
Search for the missing extension and install it.

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