Update - Pantheon will begin upgrading the test and live environments of Performance and Elite sites to PHP Runtime Generation 2 starting November 17, 2025. Our documentation has been updated to reflect this phase of the rollout: https://docs.pantheon.io/php-runtime-generation-2#current-phase-details
Nov 10, 2025 - 13:38 PST
Update - Pantheon will retire Solr-based Search for Drupal 8+ sites on November 12, 2025, as previously announced in August. This change will affect all sites running either PHP Runtime Generation 1 or Generation 2.
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 29, 2025 - 17:19 PDT
Scheduled - [Note: This is a continuation of the previous PHP Runtime Generation 2 rollout maintenance notice]
PHP Runtime Generation 2 began rolling out on September 24 over a 60-day period, starting with dev environments of free sites then gradually moving through all site plans and environments.
What’s New in PHP Runtime Generation 2: - Support for the latest PHP versions, including PHP 8.4 - Long-Term Support (LTS) editions for PHP - Updated PHP extensions and improved security features
Recommended Action: We encourage you to opt into PHP Runtime Generation 2 now (https://docs.pantheon.io/php-runtime-generation-2#how-to-opt-in) to verify compatibility with your sites and ensure a smooth transition before the automatic upgrade rollout.
For more details and instructions, visit our documentation (https://docs.pantheon.io/php-runtime-generation-2). Our support team is available to help if you have any additional questions or need assistance.
Oct 29, 202517:19 - Nov 19, 202516:19 PST
Resolved -
This incident has been resolved.
Nov 18, 15:11 PST
Monitoring -
The fix has been successfully deployed. We are currently monitoring service stability.
Nov 18, 14:31 PST
Update -
We are continuing to investigate this issue.
Nov 18, 13:18 PST
Investigating -
Our internal monitoring has been alerted to issues regarding Dashboard performance. The Engineering team is currently investigating this and will post more updates here as soon as we have more information to share.
We apologize for any inconvenience this has caused. We appreciate your understanding and patience during this process.
If you require urgent support, please open a ticket or chat. If you are unable to access the dashboard, you may also contact us via email. helpdesk@pantheon.io
Nov 18, 12:09 PST