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cPanel, "An installation already exists" error
The error message:
"An installation already exists at (your URL) as per our records. To re-install the application please uninstall the existing installation!"
What to do about it:
Your next step depends on whether you want to have both sites available at the same time, or whether you want to replace one with another.
I want to have both the old website and the new website
For example, you might want to have both WordPress and something else installed.
In this case:
- Change the subdirectory you're installing the new item in.
- you want the new item to be the 'main' site, even if it's stored in a subdirectory, look at cPanel, My web site isn't displaying
I want to replace the old website with the new website
For example, you may want to change from one content management system to another.
In this case:
- Back up any information you want to keep from the old site.
- Use Softaculous to uninstall the old site.
- Install the new site.