After the latest updates my extra mouse buttons aren't working anymore.

Just as I said in the title, I cannot use my extra mouse buttons even if they are truly working in other apps. I mention that I use a Razer Deathadder and the in-build program. Does anyone know if there is any solution? Maybe I should reinstall my mouse drivers (this shouldn't be even a solution because as I said the buttons are working in other programs( e.g. the browser)) or the game itself?
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