[Libreoffice-bugs] [Bug 131193] Impress File saved as .ppt (Powerpoint 97-2003) in 6.4 doesn't open in MS Powerpoint Viewer 2010. FILESAVE FILTER

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=131193

Timur <gtimur at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|medium                      |low
         Resolution|---                         |NOTOURBUG
             Status|UNCONFIRMED                 |RESOLVED
           Severity|normal                      |minor

--- Comment #5 from Timur <gtimur at gmail.com> ---
ODP is 18 slides with images, as are PPT and PPTX. 
IMO Powerpoint Viewer is not relevant, but Powerpoint is.

MS Office Powerpoint 2016 opens PPT in Protected View with the message:
'Office has detected a problem with file. Editing may harm your computer. Click
for more details'.
There are no real details and reasons. But we can "Edit Anyway".

No message in MSO with PPTX.

https://docs.microsoft.com/en-us/office/troubleshoot/error-messages/office-file-fails-validation
"Office File Validation is a feature that performs security checks on files.. 
A trusted location is a folder on your computer or on a network.. 
Files from the Internet and from other potentially unsafe locations may contain
viruses, worms, or other kinds of malware..
To help protect your computer, Office 2010 opens files from these potentially
unsafe locations in Protected View."

PPT is binary format. I guess MSO knows that virus can be hidden in image. And
it's not saved locally. And it surely knows it's last edited with non-MSO. 

So this is not about LO but about MSO. 
Nothing we can do here, I'll close as NOB.

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