In the Review Licenses wizard dialog, accept the apache software license and click the Finish button.

Wait for some time, check all checkboxes ( TestNG for Eclipse, TestNG, TestNG M2E Integration ) in the Confirm Selected Features dialog.

Click the Install button after the TestNG for Eclipse plugin.

Input search keyword testng in the Find search box, click Enter key or Go button to search the eclipse plugin in the marketplace.

Click eclipse “ Help -> Eclipse Marketplace” menu item at the top menubar.

After restart, the eclipse plugin has been removed successfully.

Wait for some time and click the “ Finish” button, there will pop up a dialog that lets you restart eclipse, click the “ Yes” button to restart it.

Select the plugin you want to uninstall ( in this example, I want to uninstall the TestNG M2E Integration plugin ), click the Uninstall button at the bottom.

Click the tab Installed Software in the Eclipse Installation Details dialog window, and input the search keyword testng in the search text box, then it will list related plugins in the bottom panel.

It will open the Eclipse Installation Details popup window.

Click “ Help -> Installation Details” menu item in eclipse top menubar.

My eclipse version is Neon.3 Release (4.6.3).

Because my eclipse has installed the plugin before, so before demonstrate how to install it in Eclipse, I had to uninstall it first.

Install testng eclipse