I have found a solution for this issue. To solve that, I have just delete CREATESERVERSESSIONS and CREATEUSERSESSIONS stored procedures, and run follow scripts: Then make sure that the user that is running the aos service has the rights to execute the procedures. --------------------------------------------------------------------------------------------------------------------------------------------- USE [DB NAME] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE procedure [dbo].[CREATESERVERSESSIONS] @aosId varchar(50), @version int, @instanceName nvarchar(50), @recid bigint, @maxservers int, @status int, @loadbalance int, @workload int, @serverid int OUTPUT as declare @first as varchar(50) declare @max_val as int begin select top 1 @first = SERVERID from SYSSERVERSESSIONS WITH (UPDLOCK, READPAST) where STATUS = 0 and AOSID = @aosId and INSTANCE_NAME = @instanceName if (select count(SERVERID) from SYSSERVERSESSIONS where SERVERID IN (@first)) > 0 begin update SYSSERVER