Questions:
How to upgrade or downgrade a Plesk 12.x/Onyx/Obsidian license between editions?
Answer:
Note: Downgrade between license editions is not supported.
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Upgrade options for Online Store customers:
Plesk licenses ordered in the online store can be upgraded in My Plesk (check out what My Plesk is here).
Log into My Plesk > find the license > click ‘Upgrade’ > select the required edition > proceed with the upgrade
When your license is upgraded, in Plesk go to Tools & Settings > License Management > Plesk License Key and click Retrieve Keys to update the license. There is no need to reinstall Plesk.
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Upgrade options for Plesk Partners:
Plesk Partner licenses can be upgraded in Key Administrator or Partner Central. If it cannot be done, please contact your sales representative.
When your license is upgraded, in Plesk go to Tools & Settings > License Management > Plesk License Key and click Retrieve Keys to update the license. There is no need to reinstall Plesk.
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For any questions, contact Plesk Sales team.