These were the steps are to be followed:
Login to P21WEBSCH as P21SERVICESA
Use P21USSCH for US Live
Use P21GISCH for Groves
Go to command line (CMD as Administrator)
Iisreset /restart
Then go to P21 in the Scheduled task manager. Make the SISM task inactive, Save. Make Active Save.
Notify users they can log back in.