>Hi everybody,
>
>I am not sure what happened and how to diagnose the problem. I had Windows Update last night which restarted my laptop. Today I kept losing connection with the Server. I re-started my laptop twice when it happened. It works for a few hours (or less) and then connection with the server is lost.
>
>Do you know how to troubleshoot the problem?
>
>Found also this very discouraging thread https://social.technet.microsoft.com/Forums/exchange/en-US/ef5af8fe-c18f-4154-8af0-95e48c0f66d8/outlook-2013-disconnects-to-exchange-server?forum=exchangesvrclients
>
>Don't know what to do at this point. I don't want to keep re-booting my laptop every time for that problem.

Are you sure it's the laptop that is the problem and not the exchange server? There is a hotfix for outlook 2013 https://support.microsoft.com/en-us/kb/2876644
If it's the exchange server then try this https://support.microsoft.com/en-us/kb/2962915