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Solved: “Google Chrome extension is blocked by the administrator”

When you try to install a Chrome extension, you may come across this error message:

LINER – Web/PDF Highlighter (extension ID “bmhcbmnbenmcecpmpepghooflbehcack”) is blocked by the administrator.

It is because your computer’s administrator user (mostly like the IT department if it is your work computer) blocked installing certain Chrome extensions through group policies.


If you have admin rights in your computer, follow the steps below to lift this restriction:

  1. Close Chrome
  2. Search for “regedit” in Start menu
  3. Right click on regedit.exe and click “Run as administrator”
  4. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google
  5. Remove the entire “Chrome” container
  6. Open Chrome and try to install the extension

Another alternative is uninstalling and reinstalling Chrome but I don’t recommend it as it takes more time.

Note: Restrictions will be applied back once you restart your computer. However, you can keep using the extensions you have already installed.

36 thoughts to “Solved: “Google Chrome extension is blocked by the administrator””

    1. Great observation. If you have Chrome open, you should restart it before trying. Another observation is that I was blocked from deleting the entire Chrome folder, it was simply enough to delete as much as I could from it’s content keys.

        1. Just in case, please back up your registry first
          Then make sure you open Registry Editor as Administrator
          If it doesn’t work, try to remove a key or sub-container first

    1. Thats not clever…Schools would be extremely stupid if they didnt block the registry. Schools sould block things like cmd registry powershell etc. But sometimes powershell gets ignored and you can use that to do ANYTHING YOU WANT. so congrats. Enjoy. Go in the windows search menu and type in powershell. Now you have cmd. but in blue.

    1. Asssuming that you are using Windows… Click Start menu on the bottom left corner of screen. Search for “regedit”. Click the first result

  1. Good pointer. However instead of removing the whole Chrome registry entry, for me it was enough to just:

    1. Rename Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome\ExtensionInstallBlacklist\1 (with value “*”) to _1
    2. Restart Chrome and retry installing plugin

  2. Based on this post, it says “if you have rights as an administrator”.

    In my case, I am not the administrator. Is there any case I could go around it?


  3. My Registry keeps updating on chrome reload. Looks like chrome checks for policies every time you load chrome. Anyone know a way to block this?

  4. Worked like a charm! Thanks a lot!!
    My new job’s IT restriction sucks…..They want to enclose us in a cocoon…..

    1. put firefox on thumb drive and use that they cant moniture other browsers if they have lanschool get tampermonkey and get a lanschool disabler

    1. you cant install thing on a work computer most of the time it doesnt work because downloads are blocked
      you can solve this by putting chromium on a thumb drive OR putting the extention on a thumb drive and installing it directly into extension settings

  5. it only works for windows computer not for chromebooks
    this is much more common on chromebooks and the only way i have found to get around this on a chrome is is to
    Backdoor the wifi
    backdoor the admin pc
    backdoor the schools servers
    and these are very hard to do while being monitered 24/7 by teachers who have a extinision to see your screen
    im trying to get tampermonkey to install a disabler to the extention
    please come up with one to help people on chromebooks
    (trying to put exention on thumb drive then dirrectly installing to to chromebook works if you have some admin permsions)

  6. Do yourselves a favor and uninstall and reinstall chrome. Messing with your computer’s registry can be incredibly risky, especially since this guide doesn’t tell you to make a backup let alone tell you how to do it. ESPECIALLY if this is a work computer.

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