# Analyzing URL down causes using logs

## How to find out the exact cause of why a URL is down?

1. Go to **Settings**, and under the **Basic Settings** tab, click on **System Settings** and enable **'URL'** option under the **Logging** tab.

![Cause of URL down in OpManager: Logging tab under system settings](https://www.manageengine.com/network-monitoring/how-to/images/url-down-1.png)

2. Go to **Settings**, click on the **Monitoring** tab, and select **'URL'** option.  
3. Click on any listed URL Monitor to go to the URL snapshot page (Navigate to Inventory and click on a device to open the device snapshot page.).  
4. Click on the menu option and select **'Test URL'**.

![Cause of URL down in OpManager: Test URL option under actions](https://www.manageengine.com/network-monitoring/how-to/images/url-down-2.png)

**Note:** Go to **'stderr.txt'** under `<OpManager-Home>/logs` folder. A detailed exception will be printed in this log file.