> For the complete documentation index, see [llms.txt](https://knowledgebase.qommentary.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledgebase.qommentary.com/utilities/db-connection-manager.md).

# DB Connection Utility

During the installation, Qommentary will encrypt database parameters into a connection string which is stored in the Qommentary Engine settings file.

The *DB Connection Utility* allows you to easily decrypt, update and encrypt the database connection string to update parameters such as database hostname, username or password.

![](/files/-M5HwqHWW2Lj2_OegqT6)

To update the connection string, please follow these steps:

1\.  Download the [**DB Connection Utility**](https://www.qommentary.com/downloads/utilities/Qommentary_DB_Connection_Utility.zip)\
2\. Unzip contents to any folder of your choice\
3\. Run the **Qommentary.DBConnectionManager.exe** file\
4\. Copy the encrypted connection string from the **appsettings.json** file located on the Qommentary Engine folder

```
"ConnectionStrings": {
    "Qommentary": "zKA40nbrJzFIzu1kXecgP45n1d1f9beA6MBvieX99UUmFMQxc2lpem8x6hV+TNDjgOa3+lvLJAie3Qnl+KbBxghI58LF4DgEHbZdqEpLIVoCIbOA9eFwpGUMXOzNbmTfQTD+LpHUEktCoIW6d7mQI4b2YJKcYy448rVGJk7K0fbbg8n"
}
```

5\. Paste it in the *Decrypt Connection String* field and click on **Decrypt**

![](/files/-M5ptLBWkDB0v9hvwREK)

6\. Copy the decrypted connection string and paste it in the *Encrypt Connection String* field\
7\. Update the connection string and click on **Encrypt**

![](/files/-M5pwHe08IXoCzAGUGcP)

8\. Copy the encrypted connection string and replace it in the **appsettings.json** file\
9\. Recycle the **Qommentary Engine** application pool