You may experience some Internet Explorer (IE) web browser problem and you need to disable some addon plugin within the IE to isolate the problem. For some reason, you suddenly found that the 'Disable' option is being 'greyed' out.
With a simple editing on the registry, you are able to 'recover' back the 'greyed' out button back and become active again to use.
***Important Note*** Any editing on the registry will impact to computer and it will incur some risks that may cause your computer unable to function properly. It's always a good practice to backup your registry first before performing any editing on registry you are not sure about.
Registry Editing on IE Addon Plugin Due to IE Plugin Extension Unable to Enable/Disable (Greyed Out)
1. Run command prompt (cmd.exe) as ‘Administrator’.
2. type “regedit” in the command prompt box.
3. Locate, and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Restrictions
4. On the right pane, double-click 'NoExtensionManagement ', change value to 0, click OK. Exit Registry Editor.
This is your expected end result after performing registry editing - you'll find yourself to be able to 'disable' your IE web browser addon plugin now.
