Can you download the Oculus setup again and choose Repair?https://www.oculus.com/setup/If that doesn't work, you may want to try an uninstall and reinstall of Oculus.
Can you submit a support ticket then?https://support.oculus.com/Also, can you explain what you mean by "not working"?
Please feel free to submit a support ticket. Thanks. https://support.oculus.com/
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