# Step 4: Verify Installation

Finally, verify whether you have successfully installed the add-in library. 

(1) Start Microsoft Excel

(2) Open or create a blank workbook

(3) Type `=XLABINFO()` in any cell

```excel-formula
=XLABINFO()
```

{% hint style="info" %}
Excel Lab will take a minute to initialize its computation engine.
{% endhint %}