Is it possible for UMDF driver to write to a file?

Question

For a case where I want to log a string to a text file, say in C:\log.txt, is this possible in UMDF driver? considering that UMDF drivers have limited UAC.

UDMF drivers run in user mode under the LOCAL SERVICE account. UAC does not apply. Pick a folder and use Explorer to add write access for that account. — Hans Passant, Mar 02 '19 at 17:16

score 3 · Accepted Answer · answered Mar 02 '19 at 16:35

You cannot log to C:\. Standard users are not allowed to write to that location.

The reason the default security settings on C:\ prevent standard users from writing to C:\ is to stop applications from writing to C:\.

You can write to locations you can write to, e.g.

Is it possible for UMDF driver to write to a file?

1 Answers1

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