# Disk image backup task ends with an error

## Issue

> Disk image backup task did not complete successfully (ended with an error).

***

## Resolution

Ensure that the **.NET Framework** installed on your system is version **4.6.1 or higher**. You can download it from [the **Microsoft** website](https://dotnet.microsoft.com/en-us).

If the backup still fails after installing the correct **.NET** version, access to **VSS** services may be blocked by another process. In this case:

1. In [**XMS**](#user-content-fn-1)[^1], open the **backup plan editing** window.
2. In **Advanced settings**, toggle the **Continue backup after VSS error** option **ON** and save the changes. This should resolve the issue.

<figure><img src="https://319733277-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0CBTl43C3OO6ySL1DJ6k%2Fuploads%2FJeueQhnGVcQas5DkkUp0%2Fimage.png?alt=media&#x26;token=e4f2a95c-a739-483d-a6d1-9cda34eb1307" alt=""><figcaption></figcaption></figure>

[^1]: Xopero ONE Management Service


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