I purchased the upgrade from Nik 7 and installed it (Windows version). During the install it informed me that Nik 7 would not be removed/overwritten. After using Nik 8 and confirming that it works as I want, I went to uninstall Nik 7, but find that it no longer appears in either Control Panel / Programs and Features or Settings / Apps / Installed Apps, so I can’t uninstall it. The C:\Program Files\DxO\Nik Collection 7 folder is still there, occupying 1.5Gb, and all the Nik 7 entries for Analog Efex, Color Efex, etc are still there in the Start Menu.
I would rename the folder (assuming you have access) and delete it if Nik 8 still works after rebooting. Otherwise, use the cleanup tool if you already have a backup.
An other way is to uninstall Nik8, reinstall Nik7, uninstall Nik7 and finally reinstall Nik8.
From experience on Mac, I can say that DxO‘s uninstallers leave traces of apps behind. Removing Nik is hit&miss, but the cleanup tool in combination with the specific uninstaller and the aforementioned “zig-zag” procedure could work.
Strange, in my case Nik7 still shows in “Installed Apps”, after Nik8 installation (Win11 pro, current patches) and I can use them both. Updates also worked for both versions. I no longer use Nik7 but, like with PL7, I keep it “just in case” or for testing.
Thanks, I uninstalled Nik 8 and used the cleanup tool to remove Nik 7 (had to allow the use of unsigned scripts for it to work), then re-installed Nik 8. However, I now notice that although Nik 8 is installed and working OK, it doesn’t show up as an installed program in either Control Panel or Settings app, so I guess I’m up for the same rigmarole when the next Nik update comes along.
On Mac, Nik Collection consists of several parts that are scattered over several folders on the drive. Some of these parts are shared between apps, i.e. common parts of Nik modules. If Nik for Win is about the same construct, the installation process might just upset the install documentation. Earlier versions like Nik3 installed fully functional and self-contained apps. Now, it’s bits and pieces. Repeating the uninstall zig-zag might eventually fix things, it might be worth going through the steps a few times.
Completely uninstalling Nik probably takes some manual hunting and registry manipulation… But again, I’m on Mac where things are easier to find because “Spotlight” keeps track of things … and effort might be more and more complicated on Windows.
