Transaction replication: Property LoginSecure cannot be changed or read after a connection string has been set

I was tasked with a simple easy peasy transaction replication setup (is there such a thing?) between two countries.Came in, took a cup of coffee, Rammstein on the headphones and thought it was going to be a smooth morning. What could go wrong…

When I “tried” to configure the distributor, the wizard threw the following error at me:Property LoginSecure cannot be changed or read after a connection string has been set. (Microsoft.SqlServer.ConnectionInfo)
Mmm, almost all answers on the web took me to the following solution:

  • Right click local publication followed by Distributor properties
  • Select the publisher in the list, click the browse button
  • In agent connection mode, select “impersonate the agent process account”

Well yes, I am looking at it. “impersonate the agent process account” seems to be the default setting.
I was totally lost at that moment and I knew it was going to be a long “short morning”.

I wanted to generate scripts for replication although I knew no replication was setup at the moment but I just wanted to try for the heck of it.

The generate scripts wizard came up with a warning saying I had to use the proper server name, no IP address or alias and there it was…SSMS was connected to the instance using an IP address. Once I connected using the server name…no more errors when finishing the new distributor wizard.