How to apply filter rules using WFP Api in case of a service restart

Prokash Sinha 81 Reputation points

If the service executable restarts due to exception or other error, and it restarts while Filter rules are being programmed, How to add the rules that are already programmed. ?

Or does it have to start from the beginning. Restarting from scratch looks like an option, but it will populate duplicate rules.


Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
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  1. Jeanine Zhang-MSFT 9,346 Reputation points Microsoft Vendor


    Welcome to Microsoft Q&A!

    As far as I'm concerned, you should start from the beginning.

    About the components into which the Windows Filtering Platform (WFP) API is divided, I suggest you could refer to the Doc:

    If you want to add the rules that are already programmed when the service executable restarts due to exception or other error via WFP API, as far as I'm concerned it is impossible.

    Best Regards,


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