# Cannot log in on Sandbox to install SharinPix - what should I do?

## Problem

When you try to install SharinPix on a **Salesforce Sandbox**, the installer/login page may automatically redirect you to your **Production** login screen instead of the Sandbox login screen. As a result, you can’t authenticate into the Sandbox to complete the installation.

## Cause

This usually happens because Salesforce defaults to the Production login domain, or your browser/session is already linked to a Production domain.

## Solution

1. **On the Salesforce login page** that appears during the installation process, click **Use Custom Domain**

<figure><img src="/files/y6o8eZGicZsDyNZiLhVX" alt=""><figcaption></figcaption></figure>

2. **Enter your Sandbox custom domain** (for example: `yourcompany--sandboxname`) and continue.

<figure><img src="/files/pwFhVp1GRHHqbY9NQ4N4" alt=""><figcaption></figcaption></figure>

3. You should now be **redirected to the Sandbox login screen**.
4. Enter your **Sandbox credentials** and log in to sandbox.

<figure><img src="/files/Xrb1tBVsfsHJrZAEqY8D" alt=""><figcaption></figcaption></figure>

5. Once authenticated, you can **continue the SharinPix installation** normally by following the installation documentation: [*Install SharinPix from the App Exchange in a Sandbox*](/getting-started/basic-setup/basic-setup-steps-start-with-sharinpix-in-3-steps.md)

{% hint style="success" %}
If you still have issues, please [contact our support team](/getting-started/how-to-contact-support.md) for help.
{% endhint %}


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