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dpfpapi.dll error


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#1 senadh

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Posted 21 January 2012 - 09:14 AM

Hello everybody,

Recently I have encountered this message when trying to boot my Windows 7: "C:\Windows\system32\DPFPApi.DLL is either designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support." After this it doesn't let me do anything as message keeps repeating itself after clicking OK.

I already tried to do system restore but it didnt help.

I looked up on internet for the solution for this file and most of them recommend buying registry cleaners. However, if possible I would prefer cost-free solution and also the one that doesn't include reinstallation of Windows 7.

I already uninstalled program that I suspect might have caused problem (in safe mode).


Thanks in advance,


Senad

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#2 Allan

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Posted 21 January 2012 - 09:33 AM

So you uninstalled DigitalPersona Pro for Active Directory? If that's the case download & run Mike Lin's Startup Control Panel (http://www.mlin.net/StartupCPL.shtml) - no installation required - and look for anything related to DigitalPersona on all tabs. If you find anything, right-click and delete the entry (or at least uncheck it) and reboot. You can then open Windows Explorer and navigate to C:\Windows\system32\ and delete DPFPApi.DLL

#3 senadh

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Posted 21 January 2012 - 09:55 AM

No, it s not DigitalPersona Pro. I installed and then uninstalled Windows Office 2007 where I already had Windows Office Starter 2010. I noticed that problem started occurring after doing this.

#4 Allan

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Posted 21 January 2012 - 10:01 AM

Do you have DigitalPersona installed? It appears that file is related to that program.

#5 senadh

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Posted 21 January 2012 - 10:07 AM

Nope, but I do have DigitalPersona Fingerprint Software. Should I proceed as you wrote above?

Btw, thank you so much for helping out.

#6 Allan

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Posted 21 January 2012 - 10:09 AM

Well, I suggest you uninstall that App - it seems to be the cause of the problem. You can always try reinstalling it again later if needed - but let's see if uninstalling it clears up the error.

#7 senadh

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Posted 21 January 2012 - 10:16 AM

Now it wont let me uninstall it. This is message that appears: Error 2324. Could not open file:C:\Windows\system32\DPClback.dll Get Last Error: 1006
Im trying to uninstall it from safe mode.

#8 Allan

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Posted 21 January 2012 - 10:18 AM

Okay, Try Mike Lin's Startup Control Panel and uncheck anything related to that app and see if you can then boot normally. If so, uninstall the app from regular mode.

#9 senadh

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Posted 21 January 2012 - 11:26 AM

I tried Startup Control Panel in safe mode and there was no entries related to DigitalPersona. It is somewhat expected because DigitalPersona Fingerprint Software doesnt boot in safe mode. Do you have any other options on mind?

#10 Allan

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Posted 21 January 2012 - 11:33 AM

Doesn't matter if it runs in safe mode. The app lists everything in the system's startup locations. Run msconfig - do you see anything related to that app? If so, uncheck it (though I doubt you will). If not, try a selective startup with msconfig and see if you can then get it to boot to regular mode so you can uninstall that app.

Edited by Allan, 21 January 2012 - 11:33 AM.


#11 Allan

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Posted 21 January 2012 - 11:38 AM

Also, I don't know if it will run in safe mode but you can try Revo Uninstaller to get rid of that app.
http://www.revouninstaller.com/revo_uninstaller_free_download.html

#12 LucheLibre

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Posted 21 January 2012 - 12:48 PM

Autoruns might find the startup entries.

If it looks like I know what I'm doing, there's a pretty good chance the only reason for that is because
I once asked someone to run chkdsk /r and a BC Advisor smacked me in the back of the head.

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#13 Allan

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Posted 21 January 2012 - 01:34 PM

Startup Control Panel would have found them if they existed.

#14 senadh

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Posted 21 January 2012 - 02:11 PM

Ok, this is the last try before I do reinstallation of Windows.
I managed to run Revo Uninstaller and removed the app. I also deleted DPFPApi.DLL from C:\Windows\system32.
What happens now is at the point where it is supposed to ask for fingertip the screen just starts blinking and nothing appears. After some time the window with this message pops out: "The exception unknown software exception (Oxc06d007e) occurred in the application at location 0xd5ecacd." The subject of window is: "LogonUI.exe - Application Error".

Thanks for help!

#15 Allan

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Posted 21 January 2012 - 02:24 PM

So you need the fingerprint reader to login? If that's the case, now try to reinstall the app (in safe mode if you can't boot to normal mode) and let's see if it works.

Edited by Allan, 21 January 2012 - 02:25 PM.





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