Stop Opera from auto updating Since yesterday, I'm having a problem with auto update from Opera. Until yesterday I had no problem.

I'm in OS X Mountain Lion 10.8.5, and the last supported version is Opera 37.0.2178.54. Now it automatically updates to 48.0.2685.39 and after I close Opera I cannot open Opera again because it tells me “This version is not supported, you need 10.9”.

In version 37, there is no preference setting to turn off autoupdate - you get it whether you want it or not.

How can I stop Opera from auto updating? I want to be in version 37, which is supported in my operating system.
Try the following steps:


Completely uninstall all the versions of Opera from your Mac.
Reinstall your preferred version of Opera.
Disconnect from Internet connection.
Launch and Quit Opera.
Launch Terminal.
Type this code and hit enter.

defaults write com.operasoftware.Opera OPDisableAutoUpdate true

Reconnect Internet, launch Opera, and select About Opera.
The screen will display if auto update has been disabled. It should look something like this:

Version information

Version:    49.0.2725.64 - Update checker is disabled

Update stream:  Stable

System: Mac OS X 10.9.5 64-bit