I'm running into an issue with my current users that I can't seem to solve. When user click on the options menu on the top right menu, they get automatically logged off. I tried looking online for solutions, but I haven't been to successful. 

Hi,

How many users are affected by this?

Try to let the user logon OWA with a different web browser, or on a different computer, does this issue persist? This step helps determine whether it's a browser or client related.

I also found some similar issues in our forums. Such as this one below:

https://social.technet.microsoft.com/Forums/exchange/en-US/514da444-b502-4812-8fb7-0ffdc8114074/logout-from-owa-after-click-option?forum=exchange2010

Try some suggestions mentioned in the thread, like "check the authentication settings for OWA and ECP in IIS", or "reset the ecp virtual directory". Check if they are helpful.

By the way, in the current forum we mainly discuss questions and feedbacks about Outlook Client, since this issue is related to OWA, for further assistance I suggest you post the question in Exchange forum:

https://social.technet.microsoft.com/Forums/office/en-US/home?category=exchangeserver

Regards,

Melon Chen
TechNet Community Support