Customer Service Tip: How to check the FortiOS lifecycle

1. Without logging in to the FortiCloud account, it is possible to reach the LifeCycle page from the Fortinet Support Portal.
                                                        

2. Select 'SOFTWARE' for the Software LifeCycle and write 'FortiOS' or scroll the list till FortiOS to view the lifecycle release dates for GA, End of Engineering Support, End of Support, and (for the LTS release*) the Extended End of Support.

 Also, it is possible to reach the FortiOS lifecycle by logging in to the FortiCloud account:

1. Access the Fortinet support website using the Fortinet Support Portal, with an existing account.

2. Go to the Support menu and select Product Lifecycle.

3. Access the Software menu and search for FortiOS. This page contains information about when TAC developer support and assistance services will end.

Note:
If more details about other Fortinet lifecycle products are needed, the following article could be consulted:
Customer Service Tip: Product Life Cycle Information on Fortinet products