Minifilter Driver : Specifying Altitude leads to BSOD

Question

I'm trying to build a minifilter driver to log all IRPs. Logging takes place in the driver itself (using FltCreateFile(), FltWriteFile()...).

Without specifying an altitude in the .inf file, the minifilter loads but does not attach to any volume. Manually attaching using fltmc attach also fails (Attach failed : incorrect parameter).

When specifying an altitude, fltmc load filter leads to BSOD.

Any idea what might be causing this?

Answer 1

The problem seems to be with the INF driver installation file. Making sure the Strings section of the INF file is correct (no typos) may help.

Creating a new Minifilter driver project solved the problem for me.