I am also having this problem.
I am running Office Professional 2003
The file I am trying to open was created in January of 1997.
I recieved the following error:
"You are attempting to open a file type that is blocked by your registry
policy setting."
I checked the MS Knowledge Base:
MS Knowledge Base:
http://support.microsoft.com/kb/933669/
I validated that the version of Powerpoint that I have is up to date:
Version: 11.0.8307
I have attempted modifying the registry, however my registry paths do not
agree with what is posted on the MS website.
MS Knowledge Base:
http://support.microsoft.com/kb/922847/en-us
Method 2: Disable the restriction on opening documents of certain types in
PowerPoint 2003
HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\PowerPoint\Security\FileOpenBlock
HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\PowerPoint\Security\FileOpenBlock
My Registry Paths Read:
HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\PowerPoint\
There is no \Security\FileOpenBlock portion of the path available. All I
see are the following Folders:
First Run
Options
Recent File List
Tips
UserInfo
================================================
HKEY_CURRENT_USER\Software\Policies\Microsoft\
There is no \Office\11.0\PowerPoint\Security\FileOpenBlock portion of the
path available. All I see is the following Folder:
SystemCertificates
I truly would appreciate any assistance you could provide.