Open Regedit and go to the following, keys will be different depending on what product you are using:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\<vers.>\FeatureLockDown
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Adobe Acrobat\<vers.>\FeatureLockDown
The registry entry called: bUpdater and it is a DWORD value. By simply setting the value to 0, the updates will be disabled. Setting it to 1 will enable updates. This registry entry does not exist by default, so it has to be created.
To create the value:
Create the bUpdater DWORD Value:
-Right-click on the FeatureLockDown key.
-Select New > DWORD (32-bit) Value.
-Name it bUpdater.
Set the Value of bUpdater:
-Set the value of bUpdater to 0 for disabling and 1 for enabling updates option.