Have you ever encountered a random unexpected error while working with SQL Server? It can be quite frustrating to figure out the cause of such errors. In this blog post, we will discuss an error that you might come across – Error 1051: A stop control has been sent to a service that other running services are dependent on.

Before we dive into the details, it’s important to note that you may not encounter this error unless you perform some unusual actions. In the case of the author of this blog post, they had dropped some databases from their SQL Server, thinking they were not needed. However, it turned out that these databases had a purpose, leading to the error.

The Situation

When the author tried to stop the SQL Service, they initially received the following error message:

“Windows could not stop the SQL Server (MSSQLSERVER) service on Local Computer. Error 1051: A stop control has been sent to a service that other running services are dependent on.”

Upon further investigation, they discovered that the SQL Service had dependencies with “PolyBase Data Movement” and “PolyBase Engine,” which explained the cause of the errors.

Workaround/Solution

To quickly stop the SQL Service in this situation, the author decided to kill the dependent services. They identified the path of the executable for the service and killed the corresponding processes. Once the processes were terminated, the SQL Server was able to stop and start successfully.

It’s important to note that the author mentioned they had mistakenly dropped some databases without realizing their significance. In their case, since it was not a production server, they were able to uninstall and reinstall the feature. However, if you encounter a similar situation on a production server, it is recommended to look for backups of those databases and restore them.

Remember, it’s always important to be cautious when making changes to your SQL Server environment and to have a thorough understanding of the dependencies and implications of your actions.

We hope this blog post has provided you with insights into SQL Server error 1051 and how to resolve it. If you have any questions or would like to share your experiences, feel free to leave a comment below.