Replication SQL Server to a Cluster with error
you got SQL Server error number "1326" which mean there is a connection issue to the destination server, how to troubleshoot that


ping the server and check if you can reach it, and connection allowed via firewall.
check if SQL Server services are up and running (you can do that from services window).
check if you can access the server remotely using SQL server, if not open SQL server configuration manager, choose "SQL Server Network Configuration", then "protocol for MSSQLSERVER", open TCP/IP, and make sure Sever allowing traffic to the destination.
Open SSMS, connect, right-click on the server, properties, connections, and check "Allow remote connections to this server". (you have to restart the service to make sure changes took effect).