Disable the MySQL Service
Issue
You need to disable the MySQL service.
Solution
Open your Control Panel. On the top right, change the View By dropdown menu to Small Icons:
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Click Administrative Tools:
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Click Services:
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Scroll down through this list, and double-click on MySQL:
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Now select Disabled from the pull-down menu and click Stop:
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Have you moved your LandFX folder to a shared online location using a service such as Dropbox?
If so, you'll need to rename your folder. Navigate to the root of your C: drive in Windows File Explorer, and rename the LandFX folder to Landfxold.
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That's it! Your old Single-User installation is now turned off and won't cause any conflicts.