sapcontrol -nr <instance> -function StopService sapcontrol -nr <instance> -function StartService If sapcontrol itself can’t connect, kill the process manually:
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sapstartsrv.exe -regsvc -p <profile> -noreg -trace Check service unit file: cannot connect to service sapstartsrv
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.
Restart SAP <SID> System from Services.msc. Without it, you’re locked out of basic control functions
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.
Here’s a blog post tailored for SAP administrators and technical users. It’s written to be clear, actionable, and search-engine friendly. Troubleshooting “Cannot Connect to Service sapstartsrv” – A Practical Guide Common fix: restart and enable Then
telnet localhost 50013 or
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.”
systemctl cat sapstartsrv_<SID> Common fix: restart and enable
Then, re-register the service (if corrupted):