I have an Umbraco 13 instance and would now like to reinstall it (i.e. set up a new database). I have deleted the SQLite database and the “ConnectionStrings” section from all appsettings.json files. When I now run Umbraco, I only get “Boot Failed”. And in the log file: System.InvalidOperationException: The factory has not been configured with a proper connection string.\n at Umbraco.Cms.Infrastructure.Persistence.UmbracoDatabaseFactory.Initialize()\n at System.Threading.LazyInitializer.EnsureInitializedCore[T](T& target, Boolean& initialized, Object& syncLock What else do I have to do to recreate the database/reinstall the instance?

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does nothing (not even another browser). Anyway, I get the error message on the server side. I think Umbraco thinks it is still installed. Somewhere I once read that not only the ConnectionString had to be removed, but also something else. Unfortunately I can't remember what it was (and whether it was up to date).

Usually it is just the connection string and a cookie that needs removing

Hm, interesting

I usually have more consistent results when I enable unattended installs and upgrades. I think you should try completely removing the connectionstrings section from your config. You likely still have the provider configured, which makes umbraco think that a database has already been set up.

AFAIK the install directory/logic is removed after installation. If the install directory doesn’t exist anymore the instance assumes it’s configured.

Deleting DB and connection string section works on Umbraco cloud projects. I don't think it works on a normal installation, at least I've had issues with it before.

Combination of unattended install and only removing the database, should work (leave the connection string, or alter it from sqllite to a production db instance if that's a requirement).. Unattended install should then log 4 failed attempts to connect before then initialising a new empty DB.