Question
Does Plesk support Drupal 9 or 10?
Answer
The last Drupal version that is officially supported by Plesk and can be installed via Plesk is 8.9.20.
Drupal versions 9 or 10 can still be installed manually on Plesk by using the official Drupal guides on the following link:
https://www.drupal.org/docs/user_guide/en/installation-chapter.html
Note: Support related to any manually installed Drupal 9 or 10 versions on Plesk is very limited, because these versions have not been tested extensively on Plesk servers and are not officially supported by Plesk
Alternatively, you may use and manage Drupal and its newer version updates on a Plesk server by using the Softaculous Auto Installer extension for Plesk, which is available on the following link:
https://www.plesk.com/extensions/softaculous-auto-installer/
If you would like to have Drupal versions 9 and 10 supported officially by Plesk, you may vote for this feature request on the following link:
Drupal 10 support – Your Ideas for Plesk
Feature requests with the highest number of votes and active discussions are more likely to be implemented in future versions of Plesk
Additional information
Is Drush for Drupal supported in Plesk?