Before you restoring DB
RUN This SP

CREATE PROCEDURE usp_KillUsers @dbname varchar(50) as
SET NOCOUNT ON
DECLARE @strSQL varchar(255)
PRINT 'Killing Users'
PRINT '-----------------'
CREATE table #tmpUsers(
spid int,
eid int,
status varchar(30),
loginname varchar(50),
hostname varchar(50),
blk int,
dbname varchar(50),
cmd varchar(30))
INSERT INTO #tmpUsers EXEC SP_WHO
DECLARE LoginCursor CURSOR
READ_ONLY
FOR SELECT spid, dbname FROM #tmpUsers WHERE dbname = @dbname
DECLARE @spid varchar(10)
DECLARE @dbname2 varchar(40)
OPEN LoginCursor
FETCH NEXT FROM LoginCursor INTO @spid, @dbname2
WHILE (@@fetch_status <> -1)
BEGIN
IF (@@fetch_status <> -2)
BEGIN
PRINT 'Killing ' + @spid
SET @strSQL = 'KILL ' + @spid
EXEC (@strSQL)
END
FETCH NEXT FROM LoginCursor INTO @spid, @dbname2
END
CLOSE LoginCursor
DEALLOCATE LoginCursor
DROP table #tmpUsers
PRINT 'Done'
go