---
title: "Issue: Nothing happens when I try to open a TestFit file"
description: When trying to open a TestFit file by going through TestFit. Open, nothing happens.
---

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March 25, 2024

# Issue: Nothing happens when I try to open a TestFit file

## When trying to open a TestFit file by going through TestFit. Open, nothing happens.

### Issue

Nothing happens when you try to open a file.

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---

### Cause

This happens when trying to open a file which was created by a later version of TestFit.

This can also happen if the file type gets deleted. Verify the file type says "TestFit document" in Finder or "TestFit data file" in Windows Explorer.

![2023-10-06\_10-54-58](https://support.testfit.io/hs-fs/hubfs/CS%20-%20Customer%20Success/CS%20-%20Knowledge%20Base/CS%20-%20Knowledge%20Base/Troubleshooting/2023-10-06_10-54-58.jpg?width=688&height=474&name=2023-10-06_10-54-58.jpg)

If it says "document", edit the name, and add .rsd to convert it to a TestFit file.

---

### Solution

Download and install the latest version for TestFit from the [download section of our website](https://app.testfit.io/downloads).

If you still cannot open the file, please reach out to [support@testfit.io](mailto:support@testfit.io).

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