# Maintain the browser version
If the browser version is updated on the server, we need to install the corresponding browser driver. The steps are outlined below
### Step by Step guideline
1. Stop the backend service , open the cmd command and run
```
pm2 delete all
```
2. Go to respective browser version and note down the version , version can be viewed under Help >About section
3. Go to npm library for specific browser and note down the browser driver version from given below link
{% embed url="" %}
4. Go to the QAautoMATER\_Service folder , under this folder you can find package.json , open and update chromedriver version
##
5. Open new cmd window and navigate to QAautoMATER\_Service folder
6. execute the command "**npm install**" from cmd
4. Now Run the backed service using command
pm2 start server.js
###
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