sapcontrol -nr <instance> -function StopService sapcontrol -nr <instance> -function StartService If sapcontrol itself can’t connect, kill the process manually:
ERROR: bind() failed (Address already in use) ERROR: Could not register service with WINS Often, the problem is transient. Restarting fixes it:
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Then, re-register the service (if corrupted):
Restart SAP <SID> System from Services.msc. Then, re-register the service (if corrupted): Restart SAP
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systemctl cat sapstartsrv_<SID> Common fix: restart and enable sc query sapstartsrv_<
sapcontrol -nr <instance> -function StartService sapstartsrv listens on port 5<instance>13 (e.g., instance 00 → port 50013). Test connectivity:
sapcontrol -host <hostname> -nr <nr> -function GetProcessList If that works but -host localhost fails, check your /etc/hosts (Linux) or C:\Windows\System32\drivers\etc\hosts (Windows). Navigate to: C:\usr\sap\<SID>\SYS\profile\ Open START_<SID>_<inst>_<host> and ensure SAPLOCALHOST is correct.
sc query sapstartsrv_<SID> or look for SAP <SID> System in Services.msc.