Internet Arivukal

Method 1 

Change the OGAAddin.connect keys in the System Registry

Run regedit

Search for "OGAAddin.connect" and use the Find Next function until you find an instance of OGAAddin.connect that has a value called Load Behavior in the right-hand pane (you can make this quicker by checking just the Keys check-box in the Find dialog box).

Change this value from 3 to 0.

Do this for all instances of OGAAddin.connect/Load Behavior

Method 2 

Remove OGAAddin from Office Applications

Run one of the Office applications (Word, Excel, PowerPoint, Outlook, Publisher, etc) as administrator.

Click the Office button and go to Options >> Add-Ins

Select COM Add-ins in the "Manage" drop-down list, and click Go

Disable or remove the OGAAdmin Add-In

Repeat for every MS Office application installed

Method 3 

Remove the OGAAddin registry keys completely

Run regedit

Go to each of the following registry keys, and any other that may contain OGAAddin.connect registry value sub-key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Word\Addins
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Excel\Addins
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Powerpoint\Addins
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Addins

Delete the OGAAddin.connect registry value.

Method 4 

Remove or rename the OGA components physically

Find the OGA component files in the following location: %SystemDrive%\Windows\System32 (%SystemDrive%\Windows\SysWow64 for 64-bit). These may include OGAAddin.dll, OGACheckControl.dll, OGAEXEC.exe, OGAVerify.exe

Delete, rename or move these files so that MS Office can't find them