I am using Internet Explorer 8, not by choice. I need to debug a script in it. However, no matter how many times I click the Developer Tools Icon, under Tools or click F12 it wi
Probably totally of topic, I have struggled with this as well, however it was disabled too.
After googling (the answer seemed almost identical to the one given here: Why isn't my IE8 Developer Tools working?) I found that the Disabled key was set (had its value set to 1). So open regedit, find the key (also mentioned above in other answers):
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\IEDevTools]
Then find the property:
Disabled = 1
And set it to:
Disabled = 0
After opening IE8, I could use the developer tools again :).