How to fix error ::Format of the initialization string does not conform to specification starting at index 0::

Question

I uploaded my site on godaddy shared host. I can access this database from my management studio. I can\'t access this database from my site

Answer 1

I have wasted 1.5 working days on this error and in the end a coworker solved the issue by replacing User Id by Uid and password by Pwd. The updated connection string for .Net was the error for me

Answer 2

I was getting this exception, fixed it by adding throwIfV1Schema: false to my DbContext constructor:

public class AppDb : IdentityDbContext<User>
{
    public AppDb()
        : base("DefaultConnection", throwIfV1Schema: false)
    {
    }
}

Answer 3

If you're using EF and Publish Profiles, you could have a blank connection string entry in your publish profile. Annoying but entirely possible.

Answer 4

My issue was that my web.config file kept a reference to a deleted entity model connection so check there are not any outdated connection strings.

Answer 5

An unwanted single quote was my problem. Checking the connection string from the location of the index mentioned in the error string helped me spot the issue.

Answer 6

My fix was suprisingly simple and another one of those obvious when you realise what you've done. I was manually building the configuration using .NET Core/Standard in the following fashion:

var configurationBuilder = new ConfigurationBuilder();
var root = configurationBuilder.Build(); 

and had forgotten to include the appsettings.json file that had my configuration settings in it

configurationBuilder.AddJsonFile("appsettings.json", false);

Once added, all started working once more.