# Registering OpManager

OpManager is a comprehensive network monitoring solution that helps you seamlessly monitor all your network devices for their optimum performance. Without registering for OpManager by applying the license, the monitoring functionality will be constrained to limited features. Registration grants access to all features, expands device monitoring according to license tiers, and includes free technical support.

You can register OpManager by applying the license file that you receive from ManageEngine. To apply the license, follow the steps given below:

1. Click on the profile icon (Next to the Settings icon on the top bar).  
   ![Registering OpManager: Profile icon on the top bar](https://www.manageengine.com/network-monitoring/help/images/registericon.PNG)

2. Click on the **Register** tab.

3. Click **Browse** and choose the license file from the location it is saved.

4. Click the **Register** button to apply the license file and close.

![Registering OpManager: License file application](https://www.manageengine.com/network-monitoring/help/images/register-opmanager.png)

Should you encounter any errors when applying the license, contact [Support](https://support.opmanager.com) with the license error code.