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Windows 7: Picasa has hijacked my scanner button

15 Oct 2009   #1

Windows 7 Professional x64
Picasa has hijacked my scanner button

Now here is a question: Picasa has hijacked my scanner button. Whenever I press the button on my scanner, it opens Picasa. I would like it to open Irfanview or my scanner's default application. I have tried the autoplay options, I have reset them to defaults. I have uninstalled/reinstalled Picasa. I have checked with Canon and there is nothing in the scanner's software that will allow me to configure it. There used to be a scanners and cameras applet in control panel, but it is no more with Windows 7. The only way to get my scanner's button back is to uninstall Picasa, which I don't want to do.

Any ideas?

My System SpecsSystem Spec
15 Oct 2009   #2
Microsoft MVP

Windows 7 Ultimate 32bit SP1

Is this how you've set your default viewer?

Attached Thumbnails
My System SpecsSystem Spec
19 Oct 2009   #3

Windows 7 Professional x64

I have it set to view animated GIFs only. I like Windows viewer just fine, but it doesn't do animated GIFs. I would love to specify the application for my scanner button press without messing up my file associations.
My System SpecsSystem Spec
26 Oct 2009   #4

Win7 32bit
Picasa Scanner Button Problem

I had the same problem. The following helped:

Open Registry Editor, search for "STIProxyEvent". There you should find keys for your scanner and one for Picasa. Delete the Picasa related key. I found 2 settings which I deleted, now Canon Tool Box is directly opened when scanner buttons are pushed. I have no idea if I destroyed something else, so take my advice at your own risk.

These are the keys I deleted (German Version):

"Desc"="Bilder auf den Compute"
"Icon"="C:\\Program Files\\Googl"
"Cmdline"="C:\\Program Files\\Google\\Picasa3\\Picasa3.exe /StiDevice:%1 /StiEvent:%2"

"Desc"="Bilder auf den Compute"
"Icon"="C:\\Program Files\\Googl"
"Cmdline"="C:\\Program Files\\Google\\Picasa3\\Picasa3.exe /StiDevice:%1 /StiEvent:%2"


My System SpecsSystem Spec
26 Oct 2009   #5

Windows 7 Professional x64

Exactly what I needed!
Danke sehr!
Herzlichen Dank!
Tausend Dank!
Danke schön!
Danke vielmals!
Recht schönen Dank!
Ich danke Ihnen!
Ich bin sehr dankbar!
Haben Sie vielen Dank!
Vielen Dank!
Mit tiefer Dankbarkeit!
My System SpecsSystem Spec
08 Nov 2010   #6

Windows 7 Ultimate

Thank you so much for posting this. I have the exact same problem. It is infuriating. I used the Devices and Printers in Control Panel, Events tab, to set the Start button on the Canon MF4100 printer to the MF Toolbox 4.9 (approrpriately named , the app that came with the scanner (such as it is, I can make it do what I want, albeit with difficulty but less difficulty than using Picasa for this purpose). Well, what do you know? It doesn't take affect, and then if I do a restart, voila! Picasa has grabbed the Start button again. How obnoxious this is! Quoth Google: don't be evil(?!)
My System SpecsSystem Spec

 Picasa has hijacked my scanner button

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