Users seeking to manage disk space on Windows systems have a new version of a popular utility available. JAM Software has released TreeSize Professional 9.7.1, an update to its software designed to visually map and analyze disk usage. The update, released on February 17, 2026, focuses on performance improvements and usability enhancements, according to JAM Software’s changelog.
TreeSize Professional is a tool favored by system administrators and individual users alike for its ability to quickly identify which folders and files are consuming the most storage space. This latest version aims to make that process even faster and more intuitive. The core improvement centers around scan performance, with JAM Software claiming a speed increase of up to 50% for scans that don’t include detailed statistics. This is particularly useful for quickly assessing overall disk usage without getting bogged down in granular data.
Faster Scans and Improved Search Functionality
The update also refines the file search feature. The input method for specifying search targets has been redesigned for easier handling, and users can now directly add paths by clicking within the search target line. This streamlines the process of defining where TreeSize Professional should look for specific files or folders. Previously, adding scan paths could sometimes cause the application to freeze when a large number of paths were added via the Windows context menu; this issue has been addressed in the new release.
For those working with cloud storage, TreeSize Professional 9.7.1 now offers improved support for Amazon S3 objects. The software can now display the occupied storage space of S3 objects, including all existing file versions, if the option to include SharePoint or S3 file versions in the calculation is activated. Without this option enabled, only the size of the latest version is displayed, maintaining the previous behavior.
Refinements to Duplicate Search and Filtering
The duplicate search function has also received attention. Filters are now hidden by default, providing a more focused workflow, and are more clearly labeled when needed. The option to ignore NTFS hardlinks is now activated by default. This prevents already deduplicated files from being displayed repeatedly, even after restarting the application. NTFS hardlinks allow multiple filenames to point to the same file data, and ignoring them ensures a more accurate representation of actual disk usage.
Another usability improvement involves the permissions filter within the file search. This filter is now displayed at the first level of the search filter selection, making it more easily accessible for users who demand to identify files based on their access rights.
Addressing Previous Issues and Enhancing Reporting
JAM Software has also addressed several bug fixes in this release. A potential crash when loading search paths at program start has been resolved, as has a problem loading search paths using the /SCAN parameter. The stability of the application has also been improved when adding a large number of scan paths through the Windows context menu.
Reporting features have also been enhanced. If user statistics cannot be generated for a report, the report now clearly indicates this. Users can also now explicitly update the activation status of their stored license key, providing more control over their software licensing.
Portable Version Considerations
Users of the portable version of TreeSize Professional should be aware of a change in how context menu options are handled. According to JAM Software, context menu options are no longer written to the local registry when using the portable version. However, the scan history may have been saved in the profile of the current user (AppData) when using the portable version. This is a change from previous behavior and may affect how the portable version interacts with the system.
For users needing older versions of TreeSize, resources like Uptodown maintain an archive of previous releases, offering options for compatibility with older systems or specific feature sets. Versions dating back to 2017 are available, including 9.7.1 released February 17, 2026, and 9.6.2 released December 10, 2025.
TreeSize Professional 9.7.1 represents a focused update aimed at improving the user experience and performance of an already well-regarded disk space analysis tool. The next step for users is to download and install the update to benefit from these enhancements. Further updates and feature additions are likely to be informed by user feedback and voting on the JAM Software website.
Have you tried the latest version of TreeSize Professional? Share your experiences and thoughts in the comments below.
