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officeAs you know, Office Genuine Advantage (OGA) is a Microsoft tool made with the primary intentions to find out, check and verify if your operating system hosts any illegal or hacked copy of  Microsoft Office. If an illegal copy is spotted the OGA Notification notifier will display a bothering and rather irritating “This copy of Microsoft Office is not genuine” message. If you don’t like this message, here is a free remedy for you to uninstall and remove (painlessly) the whole Office Genuine Advantage notifier.

  1. Click Start.
  2. In the Search bar, type cmd and press Enter to gain access to the black command prompt window.
  3. Now, depending on what kind of OGA you have (to know what OGA you have  go to %SystemDrive%\Windows\System32\ OGAAddin.dll or DEL %SystemDrive%\ Windows\System32\ OGACheckControl.dll) type and run the following codes (You need elevated privileges to type what follows):
  4. MsiExec /X {049F2E8F-D5EC-4133-87FA-8E94837D8D0C} /QN /NORESTART ALLUSERS=1
    MsiExec /X {B148AB4B-C8FA-474B-B981-F2943C5B5BCD} /QN /NORESTART ALLUSERS=1
    MsiExec /X {DB427EF6-F13E-4AA6-9D40-5D962394774F} /QN /NORESTART ALLUSERS=1
    MsiExec /X {B2544A03-10D0-4E5E-BA69-0362FFC20D18} /QN /NORESTART ALLUSERS=1

  5. To further clean your system and remove  Office Genuine Advantage leftovers, run these commands from the command prompt:
  6. REG DELETE HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Word\Addins\OGAAddin.Connect /f
    REG DELETE HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Excel\Addins\OGAAddin.Connect /f
    REG DELETE HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Powerpoint\Addins\OGAAddin.Connect /f
    REG DELETE HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Addins\OGAAddin.Connect /f
    DEL %SystemDrive%\Windows\System32\OGAVerify.exe
    DEL %SystemDrive%\Windows\System32\OGAEXEC.exe
    DEL %SystemDrive%\Windows\System32\OGAAddin.dll
    DEL %SystemDrive%\Windows\System32\OGACheckControl.dll

  7. Done!

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7 Comments to “How to remove Office Genuine Advantage notifier”

  1. kai Says:


    need help in removing this bug in my computer that this “microsoft is not genuine”. can anyone help me how to remove this? I read the comments and it seems that it is only applicable for VISTA. can I apply the procedure in a window 7 OS? please I need HELP..


  2. Osmosiz Ching Says:

    If u cant delete the OGAaddin.dll, pls take control of the ownership, by

    1. right click on the ‘OGAaddin.dll’, go to ‘properties’.
    2. Click on the ‘Security tab’, then click on the ‘Advanced’.
    3. Go to the ‘Owner’ then click on the ‘Edit’
    4. Now select the ‘Administrator’, then click on ‘OK’ and and ‘OK’
    5. Then, click on the ‘Edit’ and then select on the ‘SYSTEM’ and select on ‘Full Control’
    6. If still can not, pls go to the step 5 and get the ‘Full control’ on the Administrator or Users, either one.

    Hope this will be help for you to delete the OGA file.

  3. jonjammi Says:

    By the way Osmosis Ching; Thanks for your response.

  4. jonjammi Says:

    Can not do his removal (OGA); says I do not have permission to do this. Can you help?

  5. Web Talk Says:

    Wow! Thanks Osmosis Ching. Great Post!

  6. Osmosis Ching Says:

    Office Genuine Advantage (OGA) usually install into your operating system through windows update.
    But is quite easy to solve this kind of annoying thing,
    every time launch office application like words, excel and etc. The OGA notice will be appear, this is an annoying thing, microsoft is very terrible and mean.

    So, I can help you all to solve this problem. Just follow the steps. (Please close all your application, software or programs before start the step)

    Open the ‘window explorer’ or ‘My computer’, and then go to ‘drive C’, or ‘system drive’ (normally will be drive C)

    Open the ‘windows’ folder, and then open the ‘System32’ folder.

    Search for the ‘OGAaddin.dll’ file, or use the search system at the right top of the windows explorer (Vista). After that, delete the ‘OGAaddin.dll’ file, and then restart.

    After restart, the Office Genuine pop up will be gone, you may try to launch the microsoft office to have a check.

    After this, the Office Genuine Advantage no longer annoying you anymore. Even, you run windows update.

    (For people who not yet a victim of the Office Genuine, who using Vista, you may have the change to prevent it. Selective update in the window update, be careful of the Office Genuine Advantage update that will come together with the update for the microsoft office. Just hide the update, to prevent it from installing into your window)

  7. jonjammi Says:

    How to remove office geniuine notifier?

    Well how exactly do we do this. I have read the notes but am not sure if I am following the correct procedure. Can anyaone help?

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