> For the complete documentation index, see [llms.txt](https://help.security.gallagher.com/knowledge-hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.security.gallagher.com/knowledge-hub/products/cc-software/troubleshoot/command-centre-errors/command-centre-errors-microsoft-sql-se.md).

# Microsoft SQL Server Express Setup failed and rolled back with the error c

[Command Centre - Errors](/knowledge-hub/products/cc-software/troubleshoot/command-centre-errors.md) › Microsoft SQL Server Express Setup failed and rolled back with the error code 222

On installation of Command Centre you may encounter a SQL install error.

![SQL Express install error 222 during CC install](https://328339335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6bM8WhlBE9BYizPWJaPN%2Fuploads%2Fgit-blob-3b9fef0740e3150f3692370172c8223b64b1991d%2FSECHUB-CCS-ERR-SQL-EXPRESS-222-01.png?alt=media)

## Resolution

Delete the following folder and try the install again:

```
C:\Users\{WindowsUserAccount}\AppData\Local\Temp\GGLSQLInstall
```

***

🔗 **Related**

* [Command Centre - Errors - Unable to install SQL on Windows 11](/knowledge-hub/products/cc-software/troubleshoot/command-centre-errors/command-centre-errors-unable-to-install-sql-win11.md). A different SQL install failure, specific to Windows 11.
* [Databases - Considerations](/knowledge-hub/products/cc-software/configure/databases-an-overview-of-command-centr/databases-considerations.md). SQL version planning during an upgrade.


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