Whenever someone tries to open the Chrome Web Store to install an extension, he/she will get Blocked by admin message. Once done, all your existing extensions will be turned off, and users won’t be able to install any new extensions. You might have to click the OK button once again. Then, click on the Show button, enter * as the Value, and click the OK button to save the change. Double-click on it and select the Enabled option. You can see a setting named Configure extension installation blocklist on your right-hand side. Then, navigate to the following path- Computer Configuration > Administrative Templates > Class Administrative Templates > Google > Chrome > Extensions After that, type gpedit.msc and hit the Enter button to open Local Group Policy Editor on your PC. To get started, press Win+R to display the Run prompt on your screen. You need to first add the Group Policy template for Google Chrome to use the Local Group Policy method.