Dropping a Subscriber from AG Publisher

Today one of my colleague reached out to me for an help to drop a subscriber from an publisher which is participating in Always On. We seen same behavior in UI and in T-SQL statement. As a start I was looking online for help to resolve this issue. I found an KB article from Microsoft which describes this is an known issue and fixed in the below versions of SQL Server.
*) SQL Server 2016 SP2 CU1 and above
*) SQL Server 2017 RTM CU7 and above

High Availability

Steps to configure SQL server Availability Groups in DENALI

In this blog post I will drive you through configurations steps required (with GUI screens) to successfully implement SQL server’s new high availability option called “ALWAYSON” aka HADR .

If you haven’t read more about Always ON or Availability groups in SQL server code named “Denali” version, here are some articles that I would recommend you read before using this blog post to configure SQL server’s new and cool feature.