> Source: [sk162541](https://support.checkpoint.com/results/sk/sk162541)

# sk162541 - Cannot disable MTA on dashboard, "Server error is: Cannot delete the only child of the rulebase. (Code: 0x8003001D, Could not access file for write operation)" error

| Property | Value |
|----------|-------|
| Solution ID | sk162541 |
| Date Created | 2019-09-27 |
| Last Modified | 2020-02-03 |
| Technical Level | Advanced |
| Products | SmartConsole, Email Security |
| Versions | R82.10, Cloud, R82.20, R82, R81.20 |
| OS | Gaia |

## Symptoms

- Unchecking MTA on the Dashboard results in the following error:

```

Server error is: Cannot delete the only child of the rulebase.
(Code: 0x8003001D, Could not access file for write operation)

```

## Cause

Only the MTA rule (no other blade) is enabled in the Threat Prevention policy.

## Solution

This solution requires authentication. Please log in to view the full solution.

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