To learn more about FortiGate and FortiOS, as well information about technical issues, please refer to the following resources:
Installation, Administration, and Quick Start Guides, as well as other technical documents, are available online at the Fortinet Document Library
Fortinet video library
The Fortinet Video Library hosts a collection of video which provide valuable information about Fortinet products.
Issues that arise after the technical documentation has been published will often be listed in the Release Notes. To find these, go to the Fortinet Document Library.
The Fortinet Knowledge Base provides access to a variety of articles, white papers, and other documentation that provides technical insight into a range of Fortinet products. The Knowledge Base is available online at: http://kb.fortinet.com
Fortinet technical discussion forums
An online technical forum allows administrators to contribute to discussions about issues that relate to their Fortinet products. Searching the forum can help an administrator identify if an issue has been experienced by another user. You can access the support forums at: https://forum.fortinet.com/
Fortinet training services online campus
The Fortinet Training Services Online Campus hosts a collection of tutorials and training materials which you can use to increase your knowledge of Fortinet products. https://www.fortinet.com/training.html
You defined your problem, researched a solution, put together a plan to find the solution, and executed that plan. At this point, if the problem hasn't been solved, it's time to contact Fortinet Support for assistance.