# Windows System Tuning

*This is an Optional Step.* This is not needed if you are using ZebraTester to create a script.

It is intended for those Windows installations for Load Testing or as hosts for a Load Testing agent.

## Windows Tuning <a href="#windows-tuning" id="windows-tuning"></a>

| **Step**                                                                                                                                                                                                                                                                                                                                                                               | **Screenshot**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <h4 id="run-windowstuning.bat-script">Run WindowsTuning.bat Script</h4><ul><li>Open an Explorer Window and navigate to the <strong>ZebraTester installation directory</strong>(typically at c:\users\&#x3C;your-name>\zebratester).</li><li>Run this file as an Administrator</li><li>If prompted, allow the app to make changes to your device.</li><li>Continue when ready</li></ul> | Open image-20210107-202719.png![](blob:https://apica-kb.atlassian.net/07562f6b-9903-4850-bb6c-1713afb3e211#media-blob-url=true\&id=c74b1605-058c-4d2e-8e59-dfe1eea6c90f\&collection=contentId-4620838\&contextId=4620838\&mimeType=image%2Fpng\&name=image-20210107-202719.png\&size=233607\&width=872\&height=672\&alt=)Open image-20210107-203212.png![](blob:https://apica-kb.atlassian.net/63ef1847-930b-4c1a-a135-0236a691f6b4#media-blob-url=true\&id=080442f7-d140-40ef-a616-551bd09f75e5\&collection=contentId-4620838\&contextId=4620838\&mimeType=image%2Fpng\&name=image-20210107-203212.png\&size=27941\&width=746\&height=122\&alt=) |
| <h4 id="tuning-completed">Tuning Completed</h4><ul><li>Reboot to enable the changes.</li></ul>                                                                                                                                                                                                                                                                                         | Open image-20210107-203454.png![](blob:https://apica-kb.atlassian.net/d855d294-add2-4def-a7b7-377d346d311c#media-blob-url=true\&id=668f355e-d3ab-4f70-a3a0-bbf982faabdf\&collection=contentId-4620838\&contextId=4620838\&mimeType=image%2Fpng\&name=image-20210107-203454.png\&size=76384\&width=376\&height=172\&alt=)                                                                                                                                                                                                                                                                                                                          |

## Disable HTTP/S Anti-Virus Network-Scanning <a href="#disable-http-s-anti-virus-network-scanning" id="disable-http-s-anti-virus-network-scanning"></a>

Almost all anti-virus products support scanning HTTP/S network traffic, but they are often unable to handle the load released by a load test – and they also will delay the measured response times. So, Apica recommends disabling the scanning HTTP/S network connections for viruses.

**Do not completely disable your virus scanner.**

![Red Star](https://pf-emoji-service--cdn.us-east-1.prod.public.atl-paas.net/atlassian/productivityEmojis/star-red-32px.png) **Most important: Keep enabled scanning the Disk I/O for viruses.**

The following picture shows as an example of how to disable HTTP/S anti-virus scanning in Windows 10 Security; which is called “Real-time protection”:

Open image-20210107-210426.png![](blob:https://apica-kb.atlassian.net/192bba16-82ce-4ac9-8a78-a24d208bc9a9#media-blob-url=true\&id=48bc0e4a-b7cd-4223-8395-416daff3027b\&collection=contentId-4620838\&contextId=4620838\&width=1174\&height=860\&alt=)

We recommend that you re-enable HTTP/S anti-virus scanning after the execution of your tests has been completed. In Windows 10, this will happen automatically.