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IE9 - Stop pdf's from opening embedded in the browser

win7, IE9, adobe reader XI.  In order to stop ie from opening pdf's embedded in the browser, I need to disable the ie 'adobe pdf reader' add-on.  I need to do this on a thousand machines so I can't do it manually.  I've tried doing it via group policy using the below link, but it didn't work.  The add-on said it was disabled, but pdf's still open embedded.  Can anyone tell me how I can do this programatically, via group policy or via registry etc?
http://social.technet.microsoft.com/wiki/contents/articles/11406.how-to-disable-internet-explorer-ie-add-ons-through-group-policy.aspx
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JohnPaddock
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JohnPaddock
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msifoxCommented:
Adobe offers an administrative template for GPO for Adobe Reader 11.
This allows to modify the option 'display pdf in browser'.
http://www.grouppolicy.biz/2012/10/how-to-configure-group-policy-for-adobe-reader-xi/

Alternatively you can set registry value bBrowserIntegration in
SOFTWARE\Policies\Adobe\Adobe Acrobat\11.0\FeatureLockdown.

However because this doesn't work for all browsers, Adobe recommends
http://helpx.adobe.com/acrobat/using/display-pdf-browser-acrobat-xi.html
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JohnPaddockAuthor Commented:
odd.  I tried using their template and disabling 'display pdf in browser', but it didn't work.  I can even still switch it back and forth manually.  I can see that the policy was applied as the below registry value is there.  This is giving me a headache.  Maybe this policy was originally made when that setting was a setting in adobe, and not an add-on in IE.  But it specifically says it's an adboe reader XI template.  

HKLM\SOFTWARE\Policies\Adobe\Adobe Acrobat\11.0\FeatureLockdown\bBrowserIntegration
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JohnPaddockAuthor Commented:
Adobe Readers group policy template just doesn't seem to work for that setting.  maybe it depends on the version of IE.  Anyways, after a lot of experimenting, I found a way.

To disable the IE adobe reader add-on, add the below 2 registry values.  If you want to enable it, delete the whole reg key containing those values.

"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{CA8A9780-280D-11CF-A24D-444553540000}", "Flags", "1", (REG_DWORD)
"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{CA8A9780-280D-11CF-A24D-444553540000}", "Version", "*", (REG_SZ)
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JohnPaddockAuthor Commented:
This is the only method that worked.
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