> For the complete documentation index, see [llms.txt](https://docs.tradinglab.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tradinglab.ai/how-to/how-to-fix-access-violation-error-windows.md).

# How To Fix Access Violation error (Windows)

## What is this error? 

This is a rare error message that will show up in your "Experts" tab on mt5. This error affects a very small amount of users (usually only Windows 11 users). Typically this error happens because of one or more of these reasons: 

* You are using a special version of MT5 not the official one
* Your Windows is not fully up to date 
* Your latest version of MT5 is bugged and you need to rollback to a previous version 

### Make sure your windows is updated to the most recent version: 

If you are on Windows 11 that is not version 22621 and above you will need to update your Windows. Please make sure your Windows version is up to date.

### Make sure you are using the official MT5 and not a special version:

The indicator can have issues when using a special MT5 version from a 3rd party. We recommend using the official version which you can download here <https://www.metatrader5.com/en/download>

### Rollback your MT5 version:

If you are on the latest version of Windows and you are using the official version of MT5 and you are still having this error, below is a walkthrough on how fix this.&#x20;

Download MT5 here: <https://drive.google.com/file/d/19XtlCLY9Hs6KrXno11WJMMaZi08F9Ev_/view?usp=sharing>

Step 1:&#x20;

Once the indicator is installed, download the 5430 zip files. Right click on the file and click “EXTRACT”

<figure><img src="/files/FnccdftB0IkHeVNuyW7K" alt=""><figcaption></figcaption></figure>

Once extracted, it will look like this:

<figure><img src="/files/mMBxhX4tPbZvTai1eQwT" alt=""><figcaption></figcaption></figure>

Highlight and click copy on ALL THREE of those files.

Once you’ve clicked copy

·         Go back to your desktop

·         Find the MT5 Icon

·         Right click and then click on “Open File Location”

<figure><img src="/files/H1KG4cNgdlJTC6b3rUvW" alt=""><figcaption></figcaption></figure>

It should now look like this:

<figure><img src="/files/5ORO6U81gcoQe0MAJOrZ" alt=""><figcaption></figcaption></figure>

Right click and paste the 3 files you just copied and overwrite them into this folder.

When you open MT5 and get this prompt:

<figure><img src="/files/ZMSzdgiyRTiMArgw3dt1" alt=""><figcaption></figcaption></figure>

IMPORTANT: Click NO every time it should come up. &#x20;

&#x20;This message may come up in MT5 at some point. Click LATER every time

<figure><img src="/files/YVSEDAohxi0UPjR0yXjD" alt=""><figcaption></figcaption></figure>

MT5 should not update and the indicator will function as usual.