> Source: [sk124233](https://support.checkpoint.com/results/sk/sk124233)

# sk124233 - Anti-Bot and Anti-Virus update fails due to checksum error

| Property | Value |
|----------|-------|
| Solution ID | sk124233 |
| Date Created | 2018-04-17 |
| Last Modified | 2025-06-30 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81 (EOS) |
| OS | Gaia |

## Symptoms

- * Anti-Bot and Anti-Virus update fails with checksum error.
* Running the command 'cpstat antimalware -f update_status' is showing the update has failed, For example:  

  ```
  
  [Expert@HostName:0]cpstat antimalware -f update_status
  AB Update status: failed
  AB Update description: Update failed. checksum error for amw_db_v8_pkg.tar
  AB Next update description: The next try will be within one hour.
  AB DB version: 1802201947
  AV Update status: failed
  AV Update description: Update failed. checksum error for amw_kss_pkg.tar
  AV Next update description: The next try will be within one hour.
  AV DB version: 1802280836
  ```

## Cause

The update packages are corrupted or MD5sum of downloaded package changed in transit .

## Solution

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