Then download and unzip the Nik Cleanup Tool from this link.

To start using Cleaning Tool, please uninstall Nik Collection via uninstaller (Add or remove programs on Win).

Please follow these steps to clean up the software installation: NOTE: We do not delete any presets, images, or personal files: the tool searches only for the files with specific names that relate to old settings and former Nik Collection tools. To simplify this procedure, we created a Cleaning Tool that will search for and delete these files for you and assist with Nik Collection installation and usage. However, this would be a time-consuming and potentially risky procedure with the danger of accidentally removing important files. It's possible to fix such issues by searching manually for these misplaced files and deleting them. In these cases, we recommend uninstalling, then using our Nik cleaning tool.

This can lead to various issues, such as seeing old versions of the Selective Tool, two Selective Tools, two Nik Collection menus in Adobe Lightroom, or missing plugins in Adobe Photoshop or the Start menu.

Over time, these folders may have been moved, renamed, or had their permissions changed by other software or by background processes, and they might still hold data that may negatively affect the performance of more recent Nik Collection versions. Given Nik Collection's long history and the significant changes in technology introduced during the software's 25-year legacy, you may at some point have worked with an older version of Nik Collection which was installed in a custom location.

This information applies to version(s): 2018, 2, 3, 4, 5

Nik collection by dxo