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FWP_E_PROVIDER_NOT_FOUND
FWP_E_PROVIDER_NOT_FOUND means that the requested WFP policy provider cannot be found. A provider is the ownership identity associated with filters, callouts, sublayers, and related policy objects; losing it makes diagnostics and safe cleanup harder, especially on systems with multiple security products.
What to verify
- Use the exact provider GUID from the installed product rather than creating a new random GUID on every launch.
- Check whether an uninstall, reset, or failed upgrade deleted the provider while dependent objects were left behind.
- Inspect the security descriptor and caller permissions before assuming that an access failure is a missing provider.
Repair without hiding ownership
Create or restore the expected provider only from the product’s known configuration, then associate its objects consistently. Microsoft recommends associating WFP objects with providers so diagnostic tools can determine which component installed them.
Microsoft: WFP error codes · Microsoft: associate WFP objects with providers · Microsoft: WFP object management
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