Restart SAP <SID> System from Services.msc.
Few things are as frustrating as firing up SAP MMC or trying to start an SAP instance, only to be met with the dreaded error: “Cannot connect to service sapstartsrv.”
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telnet localhost 50013 or
ERROR: bind() failed (Address already in use) ERROR: Could not register service with WINS Often, the problem is transient. Restarting fixes it: Restart SAP <SID> System from Services
ps -ef | grep sapstartsrv systemctl status sapstartsrv_<SID> If it’s not running, start it manually:
sapstartsrv.exe -regsvc -p <profile> -noreg -trace Check service unit file: telnet localhost 50013 or ERROR: bind() failed (Address
This message essentially means the SAP Management Console (or a related tool) can’t communicate with the sapstartsrv process—the service responsible for starting, stopping, and monitoring SAP instances on Windows or Linux. Without it, you’re locked out of basic control functions.