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# Microsoft SQL Server database backup ends with "DV0270:User-defined script failed" error

## ⚠️ Issue

> **Microsoft SQL Server** database backup task ends with a **"DV0270:User-defined script failed"** error.

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## 💡 Cause

Some newer versions of **Microsoft SQL Server** use the ODBC driver 18, which enforces encryption by default and may therefore cause the error described above.

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## ✅ Resolution

ODBC driver 18 encrypted connections requirement can be met by using a self-signed certificate.

The step-by-step instructions below describe how to generate, configure, and install the certificate in **Microsoft SQL Server**.

{% file src="/files/u9BV4VB8lmvCmAMH9ZuR" %}