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Change Wallpaper with a batch file (Windows 7)

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Last Modified: 2012-05-10
I would like to change the wallpaper on a machine by running a batch file. Here is what I have so far:

I have a script that is copying over wallpaper.bmp to c:\wallpaper.bmp
I have the following reg key changing:
[HKEY_CURRENT_USER\Control Panel\Desktop]
"Wallpaper"="C:\\wallpaper.bmp"

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But the wallpaper doesnt seem to be changing. I have verified the file is there, and the regkey has changed. I have also tried to log off and log back on, but the registry reverts back to the way it was.  

I found a post that suggested running the following command to refresh the desktop (but that hasnt worked either)
 
%SystemRoot%\System32\RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters

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Any thoughts?
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Commented:

REG ADD "HKCU\Control Panel\Desktop" /v Wallpaper /t  REG_EXPAND_SZ /d "your path here" /f

RUNDLL32.exe user32.dll,UpdatePerUserSystemParameters

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Commented:
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Commented:
Yeah I tried that, except the wallpaper doesn't actually change.  It just stays on the slideshow that I have setup
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Commented:
it worked for me for images but not for html. Are you changing it to bmp?
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Commented:
:)  Embarrassing...I had a bad BMP file.   :P

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