OS image settings

The Settings dialog box contains general AppDNA options. To open this dialog box, choose Edit > Settings from the menus.

Use the OS Image Configuration page to specify default OS images for reports. The page lists reports that have algorithms that analyze the application DNA against OS images from one or more OS family. For example, the Windows 10 report analyzes the application DNA against the previous OS (such as Windows 7) as well as against Windows 10.

If multiple OS images are available for an OS family, you need to specify which one is the default for associated reports. The default images are used by Effort Calculator, the Overview Summary report, and the Report Export wizard, and they are selected by default for relevant reports.

For each report, specify the OS image(s) that you want to use as the default. Then click Save to preserve your changes.

The OS images that are available for selection in the drop-down boxes in this dialog box depend on the report and how you have configured it. For example, suppose you configured the Windows 10 report by specifying that your legacy Windows platform is Windows 7. For the Windows 10 report, you would then be able to choose between the available Windows 7 images in the Prior OS Image drop-down box and the available Windows 10 images in the Target OS Image drop-down box. If only one OS image is available, you do not need to make a choice.

The text No OS algorithms active for this report means that the algorithms that analyze the application DNA against an OS image have been turned off for this report – for example, in the Algorithm Groups screen.


  • If your edition supports custom reports, AppDNA automatically adds entries to this dialog box for any custom reports that include one or more OS image-dependent algorithm.
  • Reports that are turned off are not shown.
  • You can delete your own OS images in the Operating Systems screen. If you delete an OS image that was set as a default image for a report, AppDNA resets that default to the last image that was imported for that OS family. If necessary, you can change this in this dialog box.

OS image settings