Driver Installation via MSI

NTDEV
1

I have an MSI installer that installs a driver at sys32/drivers folder , as the driver needs to load at boot time . The installer works fine until I change a line of code in the driver , after which the driver reverts to an older version of the driver automatically.

Is this the WFP working ? if so is there a way to install drivers so that this does not occur?

BR
Niladri

2

What installer are you using? WIX includes the correct driver
installation API calls. So does NSI I think but 32 bit only last time I
checked which is why I moved to WIX.

James

-----Original Message-----
From: xxxxx@lists.osr.com [mailto:bounce-440916-
xxxxx@lists.osr.com] On Behalf Of xxxxx@napier.ac.uk
Sent: Monday, 14 February 2011 12:34
To: Windows System Software Devs Interest List
Subject: [ntdev] Driver Installation via MSI

I have an MSI installer that installs a driver at sys32/drivers folder
, as
the driver needs to load at boot time . The installer works fine
until I
change a line of code in the driver , after which the driver reverts
to an
older version of the driver automatically.

Is this the WFP working ? if so is there a way to install drivers so
that this
does not occur?

BR
Niladri

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3

On 02/14/2011 02:33 AM, xxxxx@napier.ac.uk wrote:

I have an MSI installer that installs a driver at sys32/drivers
folder , as the driver needs to load at boot time . The installer
works fine until I change a line of code in the driver , after which
the driver reverts to an older version of the driver automatically.

When you change the driver, you need to sign it again.

Windows will prefer a signed driver to any unsigned one with the same
INF driver date.

4

You are of course rebuilding the MSI file when you rebuild the driver? My experience with MSI files is that they provide a package and need to to be re-built when anything changes. Also, be sure as James says, to reapply the certificate to the drivers files.

Gary G. Little

----- Original Message -----
From: “N Bose”
To: “Windows System Software Devs Interest List”
Sent: Sunday, February 13, 2011 7:33:42 PM
Subject: [ntdev] Driver Installation via MSI

I have an MSI installer that installs a driver at sys32/drivers folder , as the driver needs to load at boot time . The installer works fine until I change a line of code in the driver , after which the driver reverts to an older version of the driver automatically.

Is this the WFP working ? if so is there a way to install drivers so that this does not occur?

BR
Niladri

—
NTDEV is sponsored by OSR

For our schedule of WDF, WDM, debugging and other seminars visit:
http://www.osr.com/seminars

To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer