> Source: [sk181101](https://support.checkpoint.com/results/sk/sk181101)

# sk181101 - Harmony Endpoint Security Client Upgrade Fails with Error 27121/27568

| Property | Value |
|----------|-------|
| Solution ID | sk181101 |
| Date Created | 2023-06-09 |
| Last Modified | 2023-06-16 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | Cloud, R82.20, R82.10, R82, R81.20 |
| OS | Windows |

## Symptoms

- * Harmony Endpoint Security client upgrade fails with error:

  ```
  Error 27121: Failed to communicate with existing FDE install
  ```

* dlog1.txt shows:  

  ```
  Error 27568.Full Disk Encryption verify pre-install requirements failed
  ```

* Win_Nem.log shows:  

  ```
     root [info ] Enforce [Nem::Enforce::Execute] 
     root [info ] Settings: Uninstall in progress [NemSettings::GetInstance] 
     root [info ] NemSettings: Decrypt at uninstall. [NemSettings::ShouldDecrypt]
  ```

## Cause

The user tried to upgrade the Endpoint Security client without completely removing the Full Disk Encryption (FDE) blade.

## Solution

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

---

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