Sp_change_secondary_role Problems

primary server is unavailable, I couldn't able to demote the
primary server. I ran this query to promote secondary server. I've
tried with different options @terminate=0. I've ensured no user
connections exist. But still getting sqlmint.exe error. Any one
experienced this problem? I've checked KB article, but still not
working

EXEC msdb.dbo.sp_change_secondary_role
@db_name = 'test',
@do_load = 1,
@force_load = 1,
@final_state = 1,
@access_level = 1,
@terminate = 1,
@keep_replication = 0,
@stopat = null