# S-Docs Installation Error Encryption Key Unavailable

{% hint style="warning" %}
**Error: Encryption Key Unavailable**\
The encryption key number X used to encrypt this data was deleted. Contact your administrator to get access to the data.\
Click here to return to the previous page.
{% endhint %}

### Root Cause

During the client's Sandbox refresh, the settings for platform encryption were transferred, but the encryption key was not transferred or it is invalid.

### Resolution

Go to Setup | Certificate and Key Management | Master Encryption Keys and click "Archive Current Key and Create New Key". This will archive any existing key and create a new key.


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