How to uninstall Capture One completely on the computer with macOS?
1. If activated, deactivate Capture One so that the license key could be used to activate the software on another computer or on the same computer but with different hardware. This can be done by navigating to Capture One -> License...->Deactivate (macOS)/Help->License->Deactivate (Windows).
2. Quit Capture One (if running).
3. Drag the Capture One application from your Applications folder to the trash.
4. In Capture One 7/8/9/10/11/12, make a backup of the default Capture One session or catalog if you have to work in it later. Go to Users -> Username -> Pictures and then delete the default session or catalog.
In Capture One 5/6, go to Users -> Username -> Pictures -> Capture One Library -> Capture One.col (Capture One.col50) and delete it.
5. Access the User Library folder.
Method 1. Go to the Library folder from Finder by navigating to Go -> Go to folder.
You can then enter the folder destination "~/Library".
Method 2. Alternatively, you can press Go in the finder menu next to the Apple icon, hold the Shift key when going down through the list, and select the Library option there. You will be redirected to the hidden Library folder.
NOTE: On OS X 10.11.x, the shortcut key is Alt rather than Shift.
6. Reset the preferences by going to User -> Library -> Preferences -> com.phaseone.captureoneX.plist.
NOTE: On OS X 10.9 and later versions, you cannot simply delete the preference file. On OS X 10.9 (Mavericks) and later there is a daemon running in the background (maintaining a cache of all those .plist files) called “cfprefsd”. Deleting a .plist file from Finder (as mentioned for 10.7 and 10.8) doesn’t work in 10.9 because this service will restore it from the cache when the file is needed. Do not delete the file from Finder but run the following commands in the Terminal and hit return after each line. Capture One must be closed when you do this. You will have to wait several seconds for the command to take effect. You can access terminal via Spotlight search or manually by navigating to Applications->Utilities->Terminal.app.
Please ignore any comments below in (italics). These should not be typed in Terminal. The commands are case sensitive. The preferences are specific to the corresponding version of Capture One. Thus, you only need to enter the commands for the particular version of Capture One you have.
(To delete main plist type the following:)
defaults delete com.phaseone.captureone7
defaults delete com.phaseone.captureone8
defaults delete com.phaseone.captureone9
defaults delete com.phaseone.captureone10
defaults delete com.phaseone.captureone11
defaults delete com.phaseone.captureone12
(Then delete the session history preference in the same manner:)
defaults delete com.phaseone.captureone7.LSSharedFileList
defaults delete com.phaseone.captureone8.LSSharedFileList
defaults delete com.phaseone.captureone9.LSSharedFileList
(Capture One 10 and later do not have a separate file for this)
For OSX 10.8 and older: Delete the Preference files located here
/User/Library/Preferences/com.phaseone.captureone.plist and/or .captureone7.plist
/User/Library/Preferences/com.phaseone.captureone.LSSharedFileList and/or com.phaseone.captureone7.LSSharedFileList
7. Delete the Application Support folders. If you plan to reinstall Capture One, only delete the Batch Queue folder within the Capture One directory as instructed below (User -> Library -> Application Support -> Capture One -> Batch Queue). If you do not plan to reinstall Capture One, delete the entire Capture One directory.
NOTE: If you do not see the Application Support folder, it is likely that you are in the System Library and not in the User Library. If this is the case, please refer to Step 5 to access the User Library.
8. Delete the ImageCore and CaptureCore cache. Delete the Capture One folder located in the Shared folder by navigating to Hard Drive -> Users -> Shared -> Capture One.