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We are pleased to announce Overleaf Server Pro 4.1! This release is a significant milestone in the 4.x series and includes bug fixes, enhancements and security updates. You can find further information in the official release notes.

What’s new?

This is a security release for the application runtime. The Node.js runtime has been upgraded from version 16 to 18 ahead of the upcoming deprecation of Node.js 16 on September 11, 2023.

Only Server Pro 4.1 will operate with Node.js 18. All other supported versions of Server Pro require Node.js 16, which is being deprecated. We recommend that all customers upgrade to Server Pro 4.1 at their earliest convenience.

If an access point to your Server Pro instance is publicly accessible via the internet, such as a login page or redirect to it, it is particularly important that you upgrade to Server Pro version 4.1 before September 11, 2023.

If you are still using a Server Pro version before 4.0, we recommend starting with the upgrade process immediately. In Server Pro 4.0 we introduced a breaking change in the history system that requires migrating all the history data into the new system in order for Server Pro to function.

The migration process can handle the majority of project histories without any manual work. However, very old projects can contain data that require additional steps to migrate. Starting the migration process now will give our support team adequate time to take a look into your migration issues and help you finish the migration ahead of the EOL date.

This release includes an updated script that fully deletes orphaned Mongo data from the old history system. It is safe to run the script again. Please refer to the documentation on how to run the cleanup script.

Also note that Server Pro 4.1 will be the last release with the legacy source editor. You can read more about the new editing experience on our blog.

Additional updates

Server Pro 4.1 brings several enhancements to our editors, namely:

• A better visual editing experience: the Visual Editor has been improved.
• Consistent naming scheme: the "Source" editor has been renamed to "Code Editor" and the "Rich Text" editor has been renamed to "Visual Editor".

How do I update Server Pro?

If you’re an existing Overleaf Server Pro customer, learn how to update Overleaf Server Pro 4.1.

Interested in purchasing Server Pro?

Start with our open-source, on-premises Community Edition solution, which can be freely self-installed. It will allow your organization to test the installation process and setup prior to purchasing Server Pro.

We’d be happy to provide more information and demos on Overleaf Server Pro, our on-premises solution, please contact us to start the conversation.