---
schema_version: "1"
id: 699338d66a8cccfb4f7e872008ae8c6a73bd315761e0c71bc874a2933c879bcc
title: Install in Existing Sandboxes
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/platform/264-0-0/install_in_existing_sandboxes.md
canonical_url: https://help.salesforce.com/s/articleView?id=platform.install_in_existing_sandboxes.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 005b270d01c50fee15ffc3b04e6ad3d040c6e93463ae6829fb490f3db9217d39
description: To use Data Mask in sandboxes created before you installed the managed package in your production org, additional steps are required.
products:
  - Salesforce Platform
release: "264"
---
# Install in Existing Sandboxes

To use Data Mask in sandboxes created before you installed the managed package in your production org, additional steps are required.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition"><colgroup><col></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: Lightning Experience</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: <strong>Professional</strong>, <strong>Enterprise</strong>, <strong>Unlimited</strong>, and <strong>Developer</strong> Editions with the Salesforce Data Mask managed package (Legacy) add-on license.</td></tr></tbody></table>

![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-platform-deploy_sandboxes-264-0-0-production-enus/654e51d1-6795-49fe-bd43-b5385950cf4a/images/icon_note.png)

Note This content relates to the Data Mask managed package. Read about Accelerate and Anonymize in [Own from Salesforce](https://help.salesforce.com/s/articleView?id=platform.own_from_salesforce.htm&type=5&language=en_US).

1. Confirm that MyDomain and Lightning Experience are enabled in your sandbox org.
2. Change the URL in the [Data Mask package](https://sfdc.co/datamask-install) link from login.salesforce.com to test.salesforce.com. For example if the URL is: `https://login.salesforce.com/?ec=302&startURL=%2Fpackaging%2FinstallPackage.apexp%3Fp0%3D04t3kxxxxxxxxxx` change it to `https://test.salesforce.com/?ec=302&startURL=%2Fpackaging%2FinstallPackage.apexp%3Fp0%3D04t3kxxxxxxxxxx`
3. Install the managed package using the edited installation link.
4. Follow Steps 3, 4 and 5 from [Install the Managed Package in a Production Org](https://help.salesforce.com/s/articleView?id=platform.data_mask_install.htm&release=264.0.0&type=5 "Data Mask is a managed package that you install in your production org. You can run the masking process from any new sandbox created from the production org. To install and use Data Mask, you must enable certain features in your production org and specify user permissions. After you install the package, Salesforce automatically upgrades it with new features and bug fixes. Data Mask currently supports API version 50.0.").

#### See Also

- [Install the Managed Package in a Production Org](https://help.salesforce.com/s/articleView?id=platform.data_mask_install.htm&release=264.0.0&type=5 "Data Mask is a managed package that you install in your production org. You can run the masking process from any new sandbox created from the production org. To install and use Data Mask, you must enable certain features in your production org and specify user permissions. After you install the package, Salesforce automatically upgrades it with new features and bug fixes. Data Mask currently supports API version 50.0.")