HTTP.sys registry "ErrorLoggingDir" has no effect

Hello,

I'm trying to change the path of http.sys logs.

At "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HTTP\Parameters" I set:

EnableErrorLogging (DWORD) to 1
ErrorLogFileTruncateSize (DWORD) to 1048576 (dec)
ErrorLoggingDir (String) to C:\inetpub\logs

But even after a complete system restart, the log is still written to C:\windows\system32\logfiles\HTTPERR\httperr1.log.
Nothing is written to C:\inetpub\logs. These directories exist.

What can I do? Using Server 2012 R2.

Thank you!