When building out your deployment there may be cases where you want to extend the default timeouts used in the system. A key scenario of this might be if you create a separate Administrators portal for your FIM Admins. This could be used for running large reporting queries or making configuration changes like adding\removing large sets.
If you find that the operation you are attempting to complete takes more than 60s then to resolve this you will need to extend the various timeouts in the system. Below is a breakdown of the various timeouts that you can configure in the system.
Note: These timeouts can be different on different client & webservers. So for instance in my previous post I may only want to extend the timeout for my Admin Portal which Admins & Sync use. Then I would only modify it on FIMAdminPortal.contoso.com
Bonus: If you find yourself extending timeouts significantly you may find that the UI will still timeout, but your operation will still be performed. In this case there is a timeout from ASP.Net which is causing the UI to timeout. This is not required, but will prevent the UI from displaying an error.