NCSS 2025 Update
Use the button(s) below to download the NCSS 2025 installation file. If NCSS 2025 is not yet installed on your computer, this will install the full version. If you already have NCSS 2025 statistical analysis software installed, this will update your current installation to the newest version. Your personal files will not be affected.
NCSS 2025 Download (Recommended)
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File: NCSS2025Setup_v25_0_4.exe
Size: 213.37 MB
Current Version: 25.0.4
Released: February 12, 2026
Click here for minimum System Requirements
NCSS 2025 64-bit Download
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File: NCSS2025Setup_x64_v25_0_4.exe
Size: 225.57 MB
Documentation
Update Release Notes
This page lists the changes that have been made to NCSS 2025 since it was released.
Version: 25.0.4
Released: February 12, 2026
1. Fixed typos in The Box-Jenkins Method chapter of the documentation.
2. Corrected an error when inputting values in the Column Info table on the Data Window. Pressing the Tab key would cause the focus to move to the Data Table.
Version: 25.0.3
Released: July 11, 2025
1. Corrected an error in the following four One Proportion procedures: One Proportion, One Proportion – Non-Inferiority Tests, One Proportion – Superiority by a Margin Tests, One Proportion – Equivalence Tests. The error had occurred when "Type of Data Input" was set to "Tabulate "Successes" from a Categorical Outcome Variable in the Database", with multiple outcome variables, and with the case of one or more of the outcome variables having no successes. Prior to the fix, the results for a column with no successes would mirror those of the previous column, rather than having an X of 0. This was corrected so that all columns with no successes would have the appropriate X of 0.
2. Corrected an error in application-wide percentile calculations when using the "EDF w/ Ave" formula option. In some instances (i.e., when NP is an integer) the result was slightly off.
3. Corrected a display issue with the Procedure Window. In some cases when the Procedure Window was scrolled, changing an option in a dropdown box would cause the window inputs to misalign and appear crammed at the top of the window. This has been corrected.
4. Corrected an error in the Kaplan Meier Curves (Logrank Tests) procedure that prevented the Between-Group Mean Survival Comparisons report from being displayed and causing the calculations to terminate, with the user receiving the following error message: "Object does not support this property or method."
Version: 25.0.2
Released: March 11, 2025
1. Corrected an error in the display of the Find and Replace form when Application Scale is greater than 100%. The find and replace entry boxes were not displayed correctly, running off the edge of the window.
2. Corrected an error that caused Message Boxes to appear behind other windows in some cases, so that they could not be seen.
Version: 25.0.1
Released: January 28, 2025
1. Initial Release of NCSS 2025
